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Hallenbeck, M.E. | FHWA-JPQ-18-694 | I-35 Freight Advanced Traveler Information System (FRATIS) Impacts Assessment | 2018 | TRAC/UW |
Abstract:
Under the Dynamic Mobility Applications (DMA) Program, the U.S. Department of Transportation (U.S. DOT) has sponsored the development of the Freight Advanced Traveler Information System (FRATIS) bundle, which seeks to transform freight mobility by leveraging a system of “connected vehicles” and mobile devices to maximize freight flow. The TxDOT I-35 Traveler Information During Construction (TIDC) system has been enhanced to help maximize freight operators’ productivity, improve operational efficiency, and reduce safety related incidents, by providing freight traveler information such as pre-construction closure notifications, delay predictions, and near real-time construction delay information. The report evaluates the benefits of the delivery of the TIDC’s information to the trucking firms using the system. It is based on a year-long before/after analysis of two major trucking firms, with six months of data collected before the firms started using TIDC information, and six months of after data collection after TIDC information started being used by the companies. At the conclusion of the project, both participating trucking firms remain enthusiastic supporters of the TIDC and are seeking internal company resources for improving the ability of their companies to ingest TIDC data into their existing business processes, however, no quantifiable change in trucking performance was observed. Reasons for the lack of measurable benefit include the limited opportunity to route around the I-35 construction delays, and the lack of automated ingest of TIDC data into the trucking firms’ business systems.
Authors:
Hallenbeck, M.E., McCormack, E.D., Zyuzin, D., Ishimaru, J., Jensen, M., Campbell, R., Chu, A.
Keywords:
Freight advanced traveler information, FRATIS, traveler information, during construction, TIDC, I-35, Texas, before/after analysis
Under the Dynamic Mobility Applications (DMA) Program, the U.S. Department of Transportation (U.S. DOT) has sponsored the development of the Freight Advanced Traveler Information System (FRATIS) bundle, which seeks to transform freight mobility by leveraging a system of “connected vehicles” and mobile devices to maximize freight flow. The TxDOT I-35 Traveler Information During Construction (TIDC) system has been enhanced to help maximize freight operators’ productivity, improve operational efficiency, and reduce safety related incidents, by providing freight traveler information such as pre-construction closure notifications, delay predictions, and near real-time construction delay information. The report evaluates the benefits of the delivery of the TIDC’s information to the trucking firms using the system. It is based on a year-long before/after analysis of two major trucking firms, with six months of data collected before the firms started using TIDC information, and six months of after data collection after TIDC information started being used by the companies. At the conclusion of the project, both participating trucking firms remain enthusiastic supporters of the TIDC and are seeking internal company resources for improving the ability of their companies to ingest TIDC data into their existing business processes, however, no quantifiable change in trucking performance was observed. Reasons for the lack of measurable benefit include the limited opportunity to route around the I-35 construction delays, and the lack of automated ingest of TIDC data into the trucking firms’ business systems.
Authors:
Hallenbeck, M.E., McCormack, E.D., Zyuzin, D., Ishimaru, J., Jensen, M., Campbell, R., Chu, A.
Keywords:
Freight advanced traveler information, FRATIS, traveler information, during construction, TIDC, I-35, Texas, before/after analysis
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Hallenbeck, M.E. | WA-RD 794.1 | Congestion Survey | 2013 | TRAC/UW |
Abstract:
WSDOT recently installed sensors on I-5 and SR 512 that greatly improved the amount and quality of traffic congestion data available in and around Tacoma and Olympia. This report examines the public’s use of WSDOT’s traveler information services providing that enhanced information to the public. It reports the results of an Internet survey that obtained the opinions of individuals who seek information on WSDOT’s traveler information website. The survey results indicated that respondents find considerable value in the traffic congestion information WSDOT provides and believe that the Department should continue to expend funding on roadway traveler information. The report also describes the range of mechanisms survey respondents used to obtain freeway congestion information and describes the ways that individuals put that information to use once they have obtained it.
Authors:
Hallenbeck, M.E., Le, T.
Keywords:
Traveler information
WSDOT recently installed sensors on I-5 and SR 512 that greatly improved the amount and quality of traffic congestion data available in and around Tacoma and Olympia. This report examines the public’s use of WSDOT’s traveler information services providing that enhanced information to the public. It reports the results of an Internet survey that obtained the opinions of individuals who seek information on WSDOT’s traveler information website. The survey results indicated that respondents find considerable value in the traffic congestion information WSDOT provides and believe that the Department should continue to expend funding on roadway traveler information. The report also describes the range of mechanisms survey respondents used to obtain freeway congestion information and describes the ways that individuals put that information to use once they have obtained it.
Authors:
Hallenbeck, M.E., Le, T.
Keywords:
Traveler information
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Kopf,J. | WA-RD 606.1 | ATIS Evaluation Framework | 2005 | TRAC/UW |
Abstract:
This report documents the results of five Advanced Traveler Information System (ATIS) project evaluations performed for the Washington State Department of Transportation. The projects encompass a range of devices in both urban and rural environments. Guidelines and lessons learned for planning and operating ATIS programs were then developed from the evaluation results. These observations were clustered into common themes in the areas of maintenance, rural projects, project management, staffing, training, support, and customer response. As part of this effort, a standardized evaluation approach for ATIS projects was developed. The approach was designed to focus on technical, management, and organizational lessons learned. The method was effective in producing useful information about ATIS benefits and deployment issues. Using that approach, an additional nineteen required ATIS evaluations will be performed in a second project phase. The additional evaluations will also provide an opportunity to further verify and strengthen the initial lessons learned, as well as to expand the method.
Authors:
Kopf,J., Nee,J., Ishimaru,J. M., Hallenbeck,M. E.
Keywords:
advanced traveler information systems, ATIS, benefit, benefits, environment, evaluation, framework, Intelligent transportation system, ITS, maintenance, management, planning, program, project evaluation, project management, rural, training, transportation, traveler information, urban, Washington, Washington state
This report documents the results of five Advanced Traveler Information System (ATIS) project evaluations performed for the Washington State Department of Transportation. The projects encompass a range of devices in both urban and rural environments. Guidelines and lessons learned for planning and operating ATIS programs were then developed from the evaluation results. These observations were clustered into common themes in the areas of maintenance, rural projects, project management, staffing, training, support, and customer response. As part of this effort, a standardized evaluation approach for ATIS projects was developed. The approach was designed to focus on technical, management, and organizational lessons learned. The method was effective in producing useful information about ATIS benefits and deployment issues. Using that approach, an additional nineteen required ATIS evaluations will be performed in a second project phase. The additional evaluations will also provide an opportunity to further verify and strengthen the initial lessons learned, as well as to expand the method.
Authors:
Kopf,J., Nee,J., Ishimaru,J. M., Hallenbeck,M. E.
Keywords:
advanced traveler information systems, ATIS, benefit, benefits, environment, evaluation, framework, Intelligent transportation system, ITS, maintenance, management, planning, program, project evaluation, project management, rural, training, transportation, traveler information, urban, Washington, Washington state
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http://www.wsdot.wa.gov/research/reports/fullreports/606.1.pdf http://wsdot.wa.gov/Research/Reports/600/606.1.htm |
Dailey,D. J. | WA-RD 603.1 | TrafficTV | 2005 | TRAC/UW |
Abstract:
TrafficTV is a traffic and traveler information resource available on cable television (UWTV2 Channel 76). It began operation June 1, 1998, as part of the SmartTrek Operational Deployment under the name Traffic Channel. The SmartTrek evaluation of May 2001 identified several problems with Traffic Channel and recommended some improvements. This project made those changes and renamed the application TrafficTV. A series of meetings was held in June 2003. These meetings involved personnel from the Washington State Department of Transportation (WSDOT) Northwest Region, WSDOT Advanced Technology Branch, WSDOT Olympia office, the University of Washington's UWTV, and the UW Intelligent Transportation Systems Research Program. From these meetings came a set of recommended changes. These changes were made to TrafficTV and are documented in this report. Battelle Institute conducted a focus group in May 2004 to evaluate the resulting program. This focus group concluded that TrafficTV is a useful traveler information tool but has not had sufficient public exposure to make it widely known to the traveling public. A market penetration audit conducted by Media Audit in June and July 2004 indicated that when viewers were asked about TrafficTV, over 94,000 had seen the program within the last week. This was deemed surprisingly high, given the lack of external exposure and that viewers would have found TrafficTV only by word of mouth or by "channel surfing." Again, a conclusion of the audit was that additional exposure would make TrafficTV more valuable as a traveler information tool. As a result of the publicity recommendations, a banner has been added to the North West Region's traveler information page to alert users to the availability of TrafficTV.
Authors:
Dailey,D. J., Bradbury,J.
Keywords:
traveler information, cable TV, Intelligent transportation system, congestion information, traffic, evaluation, Washington, Washington state, transportation, WSDOT, intelligent transportation systems, systems, research, program, group, public
TrafficTV is a traffic and traveler information resource available on cable television (UWTV2 Channel 76). It began operation June 1, 1998, as part of the SmartTrek Operational Deployment under the name Traffic Channel. The SmartTrek evaluation of May 2001 identified several problems with Traffic Channel and recommended some improvements. This project made those changes and renamed the application TrafficTV. A series of meetings was held in June 2003. These meetings involved personnel from the Washington State Department of Transportation (WSDOT) Northwest Region, WSDOT Advanced Technology Branch, WSDOT Olympia office, the University of Washington's UWTV, and the UW Intelligent Transportation Systems Research Program. From these meetings came a set of recommended changes. These changes were made to TrafficTV and are documented in this report. Battelle Institute conducted a focus group in May 2004 to evaluate the resulting program. This focus group concluded that TrafficTV is a useful traveler information tool but has not had sufficient public exposure to make it widely known to the traveling public. A market penetration audit conducted by Media Audit in June and July 2004 indicated that when viewers were asked about TrafficTV, over 94,000 had seen the program within the last week. This was deemed surprisingly high, given the lack of external exposure and that viewers would have found TrafficTV only by word of mouth or by "channel surfing." Again, a conclusion of the audit was that additional exposure would make TrafficTV more valuable as a traveler information tool. As a result of the publicity recommendations, a banner has been added to the North West Region's traveler information page to alert users to the availability of TrafficTV.
Authors:
Dailey,D. J., Bradbury,J.
Keywords:
traveler information, cable TV, Intelligent transportation system, congestion information, traffic, evaluation, Washington, Washington state, transportation, WSDOT, intelligent transportation systems, systems, research, program, group, public
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http://www.wsdot.wa.gov/research/reports/fullreports/603.1.pdf http://wsdot.wa.gov/Research/Reports/600/603.1.htm |
Kristof,T. | WA-RD 597.1 | Assessing the Benefits of Traveler and Transportation Information Systems | 2004 | TRAC/UW |
Abstract:
The goal of advanced traveler information systems (ATIS) is to provide travelers with information that will facilitate their decisions concerning route choice, departure time, trip delay or elimination, and mode of transportation. The benefits of ATIS projects can be evaluated through field studies, simulation software, and surveys. An evaluation method called the ITS Deployment Analysis System (IDAS) is suggested for use by the Washington State Department of Transportation (WSDOT). IDAS is a "sketch" planning tool intended for screening and prioritizing all intelligent transportation systems (ITS) projects (not just ATIS projects). The software evaluates a number of benefits. These are determined by changes attributable to the deployment of ITS in vehicle miles traveled (VMT), vehicle hours traveled (VHT), volume-capacity (v/c) ratios, and vehicle speeds throughout a given network. The IDAS evaluation depends on a number of assumptions that affect the calculations of costs and benefits. The IDAS developers recommend that these assumptions be inspected by local agencies and adjusted to better represent local conditions. The assumptions about the impacts on VMT, VHT, v/c ratios, and vehicle speed are particularly important. Consequently, suggestions are made within this report for adjustments that WSDOT should make to these default values. These values will allow the WSDOT to successfully employ IDAS for ATIS evaluation.
Authors:
Kristof,T., Lowry,M., Rutherford,G. S.
Keywords:
advanced traveler information systems, agencies, analysis, Assessing, ATIS, ATIS benefits, ATIS evaluation, benefit, benefits, condition, cost, costs, Deployment, evaluation, IDAS, impact, impacts, information systems, Intelligent transportation system, intelligent transportation systems, ITS, ITS Deployment Analysis System, planning, prioritizing, project, research, software, speed, Study, survey, Surveys, System, systems, transportation, traveler information, Washington, Washington state, WSDOT
The goal of advanced traveler information systems (ATIS) is to provide travelers with information that will facilitate their decisions concerning route choice, departure time, trip delay or elimination, and mode of transportation. The benefits of ATIS projects can be evaluated through field studies, simulation software, and surveys. An evaluation method called the ITS Deployment Analysis System (IDAS) is suggested for use by the Washington State Department of Transportation (WSDOT). IDAS is a "sketch" planning tool intended for screening and prioritizing all intelligent transportation systems (ITS) projects (not just ATIS projects). The software evaluates a number of benefits. These are determined by changes attributable to the deployment of ITS in vehicle miles traveled (VMT), vehicle hours traveled (VHT), volume-capacity (v/c) ratios, and vehicle speeds throughout a given network. The IDAS evaluation depends on a number of assumptions that affect the calculations of costs and benefits. The IDAS developers recommend that these assumptions be inspected by local agencies and adjusted to better represent local conditions. The assumptions about the impacts on VMT, VHT, v/c ratios, and vehicle speed are particularly important. Consequently, suggestions are made within this report for adjustments that WSDOT should make to these default values. These values will allow the WSDOT to successfully employ IDAS for ATIS evaluation.
Authors:
Kristof,T., Lowry,M., Rutherford,G. S.
Keywords:
advanced traveler information systems, agencies, analysis, Assessing, ATIS, ATIS benefits, ATIS evaluation, benefit, benefits, condition, cost, costs, Deployment, evaluation, IDAS, impact, impacts, information systems, Intelligent transportation system, intelligent transportation systems, ITS, ITS Deployment Analysis System, planning, prioritizing, project, research, software, speed, Study, survey, Surveys, System, systems, transportation, traveler information, Washington, Washington state, WSDOT
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http://www.wsdot.wa.gov/research/reports/fullreports/597.1.pdf http://wsdot.wa.gov/Research/Reports/500/597.1.htm |
Ulfarsson,G. | WA-RD 511.2 | Summary: TravelAid | 2002 | TRAC/UW |
Abstract:
This report discusses the effectiveness of using variable message signs (VMS) and in-vehicle traffic advisory systems (IVU) on a mountainous pass (Snoqualmie Pass on Interstate 90 in Washington state) for changing driver behavior. As part of this project, variable message and variable speed limit information were placed along a 61-km segment of I-90 between North Bend, Wash., and Cle Elum, Wash. The study area was the region where I-90 passes over the Cascade mountains through the Snoqualmie Pass. The signs, which were implemented during the winter of 1997-98, provided weather and roadway information to motorists with the intention of reducing the number and severity of accidents.An analysis of accidents on Snoqualmie Pass was conducted with historical accident data. Several accident models were used to estimate accident frequencies severity. The report reviews the analysis of speed data over Snoqualmie Pass and reports on lane-mean speeds and deviations.Next, the potential users' needs for variable message information and their willingness to use in-vehicle information were assessed. A survey was distributed and analyzed to explore these questions. An econometric analysis was performed of potential speed reductions for various weather conditions. A second set of analyses was then performed on the surveys to investigate the characteristics associated with drivers who would use an in-vehicle system and those who would not use the information provided by the in-vehicle unit.A laboratory experiment was conducted on the use of an in-vehicle system and VMS. A driving simulator was used for this study. Mean speed and deviation from the mean speed were analyzed, as was the effectiveness of the systems over each 4.68-km (3 mile) stretch. The effect of VMS on the relationship between mean speeds and speed deviations was analyzed.
Authors:
Ulfarsson,G., Shankar,V., Vu,P., Mannering,F. L., Boyle,L., Morse,M.
Keywords:
traveler information, variable message signs, in-vehicle traffic informaiton, variable speed limit, driving simulation
This report discusses the effectiveness of using variable message signs (VMS) and in-vehicle traffic advisory systems (IVU) on a mountainous pass (Snoqualmie Pass on Interstate 90 in Washington state) for changing driver behavior. As part of this project, variable message and variable speed limit information were placed along a 61-km segment of I-90 between North Bend, Wash., and Cle Elum, Wash. The study area was the region where I-90 passes over the Cascade mountains through the Snoqualmie Pass. The signs, which were implemented during the winter of 1997-98, provided weather and roadway information to motorists with the intention of reducing the number and severity of accidents.An analysis of accidents on Snoqualmie Pass was conducted with historical accident data. Several accident models were used to estimate accident frequencies severity. The report reviews the analysis of speed data over Snoqualmie Pass and reports on lane-mean speeds and deviations.Next, the potential users' needs for variable message information and their willingness to use in-vehicle information were assessed. A survey was distributed and analyzed to explore these questions. An econometric analysis was performed of potential speed reductions for various weather conditions. A second set of analyses was then performed on the surveys to investigate the characteristics associated with drivers who would use an in-vehicle system and those who would not use the information provided by the in-vehicle unit.A laboratory experiment was conducted on the use of an in-vehicle system and VMS. A driving simulator was used for this study. Mean speed and deviation from the mean speed were analyzed, as was the effectiveness of the systems over each 4.68-km (3 mile) stretch. The effect of VMS on the relationship between mean speeds and speed deviations was analyzed.
Authors:
Ulfarsson,G., Shankar,V., Vu,P., Mannering,F. L., Boyle,L., Morse,M.
Keywords:
traveler information, variable message signs, in-vehicle traffic informaiton, variable speed limit, driving simulation
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http://www.wsdot.wa.gov/research/reports/fullreports/511.2.pdf http://wsdot.wa.gov/Research/Reports/500/511.2.htm |
Sauer,G. | WA-RD 552.1 | Analysis of Web-Based WSDOT Traveler Information: Testing Users' Information Retrieval Strategies | 2002 | TRAC/UW |
Abstract:
This report details the findings of a usability study for the Washington State Department of Transportation (WSDOT) of traffic and weather information on the Web. The purpose of this test was to examine the user experience associated with retrieving traveler information, such as road conditions, traffic congestion, pass information, construction, and weather, from the WSDOT Traffic and Weather site.
Authors:
Sauer,G., Kolko,B., Rose,E., Haselkorn,M.
Keywords:
usability testing, World-Wide Web, users' retrieval strategies, traveler information, research
This report details the findings of a usability study for the Washington State Department of Transportation (WSDOT) of traffic and weather information on the Web. The purpose of this test was to examine the user experience associated with retrieving traveler information, such as road conditions, traffic congestion, pass information, construction, and weather, from the WSDOT Traffic and Weather site.
Authors:
Sauer,G., Kolko,B., Rose,E., Haselkorn,M.
Keywords:
usability testing, World-Wide Web, users' retrieval strategies, traveler information, research
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http://www.wsdot.wa.gov/research/reports/fullreports/552.1.pdf http://wsdot.wa.gov/Research/Reports/500/552.1.htm |
Boon,C. B. | WA-RD 529.1 | Road Weather Information Systems (RWIS): Enabling Proactive Maintenance Practices in Washington State | 2002 | TRAC/UW |
Abstract:
Washington State Department of Transportation's (WSDOT) rWeather program has significantly integrated and expanded the capabilities of road weather information systems (RWIS) in the state, enabling proactive winter maintenance practices and better informed winter travel decisions. The report reviews the potential benefits of a comprehensive, integrated RWIS, including cost-efficient snow and ice control strategies and improved safety and mobility. Use of, and attitudes toward, RWIS by WSDOT maintenance personnel are examined, and barriers to the expanded use of RWIS technologies are identified. Public response to the rWeather traveler information website is evaluated. Recommendations are presented for more fully utilizing RWIS capabilities.
Authors:
Boon,C. B., Cluett,C.
Keywords:
Road Weather Information System, RWIS, winter maintenance, snow and ice control, traveler information, research
Washington State Department of Transportation's (WSDOT) rWeather program has significantly integrated and expanded the capabilities of road weather information systems (RWIS) in the state, enabling proactive winter maintenance practices and better informed winter travel decisions. The report reviews the potential benefits of a comprehensive, integrated RWIS, including cost-efficient snow and ice control strategies and improved safety and mobility. Use of, and attitudes toward, RWIS by WSDOT maintenance personnel are examined, and barriers to the expanded use of RWIS technologies are identified. Public response to the rWeather traveler information website is evaluated. Recommendations are presented for more fully utilizing RWIS capabilities.
Authors:
Boon,C. B., Cluett,C.
Keywords:
Road Weather Information System, RWIS, winter maintenance, snow and ice control, traveler information, research
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http://www.wsdot.wa.gov/research/reports/fullreports/529.1.pdf http://wsdot.wa.gov/Research/Reports/500/529.1.htm |
Ulfarsson,G. | WA-RD 511.1 | TravelAid | 2001 | TRAC/UW |
Abstract:
This report discusses the effectiveness of using variable message signs (VMS) and in-vehicle traffic advisory systems (IVU) on a mountainous pass (Snoqualmie Pass on Interstate 90 in Washington state) for changing driver behavior. As part of this project, variable message and variable speed limit information were placed along a 61-km segment of I-90 between North Bend, Wash., and Cle Elum, Wash. The study area was the region where I-90 passes over the Cascade mountains through the Snoqualmie Pass. The signs, which were implemented during the winter of 1997-98, provided weather and roadway information to motorists with the intention of reducing the number and severity of accidents.An analysis of accidents on Snoqualmie Pass was conducted with historical accident data. Several accident models were used to estimate accident frequencies severity. The report reviews the analysis of speed data over Snoqualmie Pass and reports on lane-mean speeds and deviations.Next, the potential users' needs for variable message information and their willingness to use in-vehicle information were assessed. A survey was distributed and analyzed to explore these questions. An econometric analysis was performed of potential speed reductions for various weather conditions. A second set of analyses was then performed on the surveys to investigate the characteristics associated with drivers who would use an in-vehicle system and those who would not use the information provided by the in-vehicle unit.A laboratory experiment was conducted on the use of an in-vehicle system and VMS. A driving simulator was used for this study. Mean speed and deviation from the mean speed were analyzed, as was the effectiveness of the systems over each 4.68-km (3 mile) stretch. The effect of VMS on the relationship between mean speeds and speed deviations was analyzed.
Authors:
Ulfarsson,G., Shankar,V., Vu,P., Mannering,F. L., Boyle,L., Morse,M.
Keywords:
traveler information, variable message signs, in-vehicle traffic information, variable speed limit, driving simulation
This report discusses the effectiveness of using variable message signs (VMS) and in-vehicle traffic advisory systems (IVU) on a mountainous pass (Snoqualmie Pass on Interstate 90 in Washington state) for changing driver behavior. As part of this project, variable message and variable speed limit information were placed along a 61-km segment of I-90 between North Bend, Wash., and Cle Elum, Wash. The study area was the region where I-90 passes over the Cascade mountains through the Snoqualmie Pass. The signs, which were implemented during the winter of 1997-98, provided weather and roadway information to motorists with the intention of reducing the number and severity of accidents.An analysis of accidents on Snoqualmie Pass was conducted with historical accident data. Several accident models were used to estimate accident frequencies severity. The report reviews the analysis of speed data over Snoqualmie Pass and reports on lane-mean speeds and deviations.Next, the potential users' needs for variable message information and their willingness to use in-vehicle information were assessed. A survey was distributed and analyzed to explore these questions. An econometric analysis was performed of potential speed reductions for various weather conditions. A second set of analyses was then performed on the surveys to investigate the characteristics associated with drivers who would use an in-vehicle system and those who would not use the information provided by the in-vehicle unit.A laboratory experiment was conducted on the use of an in-vehicle system and VMS. A driving simulator was used for this study. Mean speed and deviation from the mean speed were analyzed, as was the effectiveness of the systems over each 4.68-km (3 mile) stretch. The effect of VMS on the relationship between mean speeds and speed deviations was analyzed.
Authors:
Ulfarsson,G., Shankar,V., Vu,P., Mannering,F. L., Boyle,L., Morse,M.
Keywords:
traveler information, variable message signs, in-vehicle traffic information, variable speed limit, driving simulation
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http://www.wsdot.wa.gov/research/reports/fullreports/511.1.pdf http://wsdot.wa.gov/Research/Reports/500/511.1.htm |
Wetherby, B. | WA-RD 462.6 | SWIFT - Evaluation Summary | 1999 | TRAC/UW |
Abstract:
The SWIFT (Seattle Wide-area for Travelers) project was a field operational test of a wide area ITS communications system using a flexible FM sub-carrier High Speed Data System (HSDS). The test was conducted in a partnership with WSDOT, King County Metro Transit, Delco Electronics, Inc., IBM, Seiko Communications Systems, Metro Traffic Control and the Federal Highway Administration. Three devices were used, by the public, to receive the traveler a Delco car radio (capable of providing vector navigation in addition to personal paging and the messages); a Seiko wrist watch pager; and a portable computer (capable of providing graphic displays of traffic advisories and bus positions). After the 15-month test, interviews with the 600 Seattle commuters/participants were conducted to assess user acceptance. A communications study evaluated the adequacy of the HSDS system to disseminate traveler information. Architecture study assessed the effectiveness of the various components to carry out SWIFT operations. institutional issues study documented the history of the project and assessed the institutional issues confronted. A deployment cost study investigated the cost of deployment of a SWIFT system and assessment of potential profitability. The first five reports in this series detail individual aspects of the project.
Authors:
Wetherby, B., Perez, W.
Keywords:
Acceptance, Assessment, bus, computer, control, cost, counties, data, Deployment, effectiveness, evaluation, highway, Institutional, interviews, Issues, ITS, Miscellaneous Library, paging, portable computer, project, public, seattle, speed, Study, SWIFT, System, systems, traffic, traffic advisories, traffic control, transit, traveler information, WSDOT
The SWIFT (Seattle Wide-area for Travelers) project was a field operational test of a wide area ITS communications system using a flexible FM sub-carrier High Speed Data System (HSDS). The test was conducted in a partnership with WSDOT, King County Metro Transit, Delco Electronics, Inc., IBM, Seiko Communications Systems, Metro Traffic Control and the Federal Highway Administration. Three devices were used, by the public, to receive the traveler a Delco car radio (capable of providing vector navigation in addition to personal paging and the messages); a Seiko wrist watch pager; and a portable computer (capable of providing graphic displays of traffic advisories and bus positions). After the 15-month test, interviews with the 600 Seattle commuters/participants were conducted to assess user acceptance. A communications study evaluated the adequacy of the HSDS system to disseminate traveler information. Architecture study assessed the effectiveness of the various components to carry out SWIFT operations. institutional issues study documented the history of the project and assessed the institutional issues confronted. A deployment cost study investigated the cost of deployment of a SWIFT system and assessment of potential profitability. The first five reports in this series detail individual aspects of the project.
Authors:
Wetherby, B., Perez, W.
Keywords:
Acceptance, Assessment, bus, computer, control, cost, counties, data, Deployment, effectiveness, evaluation, highway, Institutional, interviews, Issues, ITS, Miscellaneous Library, paging, portable computer, project, public, seattle, speed, Study, SWIFT, System, systems, traffic, traffic advisories, traffic control, transit, traveler information, WSDOT
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Wetherby, B. | WA-RD 462.1 | SWIFT Seattle Wide-Area Information for Travelers | 1998 | TRAC/UW |
Abstract:
The SWIFT (Seattle Wide-area Information for Travelers) Field Operational Test was intended to evaluate the performance of a large-scale urban advanced traveler information system (ATIS) deployment in the Seattle area. The unique features of the SWIFT ATIS were the provision of information for multiple transportation modes, the delivery of this information using three different devices, and the use of the FM sideband as the primary communication medium. Approximately 800 system users were recruited during the course of the study. The SWIFT Architecture Study is one of five component studies to the overall system evaluation. This report details the results of the SWIFT Architecture Study based on the evaluation.
Authors:
Wetherby, B., Rajka, H., Van Aerde, M.
Keywords:
Traveler information, advanced traveler information system, ATIS, multimodal, SWIFT
The SWIFT (Seattle Wide-area Information for Travelers) Field Operational Test was intended to evaluate the performance of a large-scale urban advanced traveler information system (ATIS) deployment in the Seattle area. The unique features of the SWIFT ATIS were the provision of information for multiple transportation modes, the delivery of this information using three different devices, and the use of the FM sideband as the primary communication medium. Approximately 800 system users were recruited during the course of the study. The SWIFT Architecture Study is one of five component studies to the overall system evaluation. This report details the results of the SWIFT Architecture Study based on the evaluation.
Authors:
Wetherby, B., Rajka, H., Van Aerde, M.
Keywords:
Traveler information, advanced traveler information system, ATIS, multimodal, SWIFT
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Trombly, J. | WA-RD 462.2 | SWIFT - Consumer Acceptance Study | 1998 | TRAC/UW |
Abstract:
The Seattle Wide-area Information for Travelers (SWIFT) Operational Test was intended to evaluate the performance of a large-scale, urban Advanced Traveler Information System (ATIS) deployment in the Seattle area. With the majority the SWIFT system completed by June 30,1996, the SWIFT Field Operational Test (FOT) evaluation was conducted from July 1, 1996, through September 20, 1997. The unique features of the SWIFT ATIS included the provision of information for multiple transportation modes, the delivery of this information using three different devices, and the use of FM sideband as the primary communications medium. This report details the findings for the SWIFT Consumer Acceptance Study based on the evaluation objectives that were identified in the SWIFT Evaluation Plan (1995). The primary objectives of the SWIFT Consumer Acceptance Study were to assess the following: Importance of traveler information in travel planning, Usefulness of SWIFT traveler information in travel planning, Minimum set of user services and device features required to provide viable product and services, User perceptions of SWIFT device usefulness, Willingness-to-pay for different services. User perceptions of changes in travel convenience and efficiency, User perceptions of changes in traffic congestion, air quality, energy consumption, and safety. ,
Authors:
Trombly, J., Wetherby, B., Dixson, A.
Keywords:
Acceptance, air quality, analysis, Assessment, ATIS, availability, bus, computer, congestion, congestion information, Consumer, data, data collection, Energy, environmental, evaluation, group, impact, impacts, improvement, incident, interviews, Miscellaneous Library, objectives, performance, planning, portable computer, quality, reliability, safety, seattle, Study, SWIFT, System, systems, traffic, traffic congestion, transit, transportation, travel, traveler information, urban
The Seattle Wide-area Information for Travelers (SWIFT) Operational Test was intended to evaluate the performance of a large-scale, urban Advanced Traveler Information System (ATIS) deployment in the Seattle area. With the majority the SWIFT system completed by June 30,1996, the SWIFT Field Operational Test (FOT) evaluation was conducted from July 1, 1996, through September 20, 1997. The unique features of the SWIFT ATIS included the provision of information for multiple transportation modes, the delivery of this information using three different devices, and the use of FM sideband as the primary communications medium. This report details the findings for the SWIFT Consumer Acceptance Study based on the evaluation objectives that were identified in the SWIFT Evaluation Plan (1995). The primary objectives of the SWIFT Consumer Acceptance Study were to assess the following: Importance of traveler information in travel planning, Usefulness of SWIFT traveler information in travel planning, Minimum set of user services and device features required to provide viable product and services, User perceptions of SWIFT device usefulness, Willingness-to-pay for different services. User perceptions of changes in travel convenience and efficiency, User perceptions of changes in traffic congestion, air quality, energy consumption, and safety. ,
Authors:
Trombly, J., Wetherby, B., Dixson, A.
Keywords:
Acceptance, air quality, analysis, Assessment, ATIS, availability, bus, computer, congestion, congestion information, Consumer, data, data collection, Energy, environmental, evaluation, group, impact, impacts, improvement, incident, interviews, Miscellaneous Library, objectives, performance, planning, portable computer, quality, reliability, safety, seattle, Study, SWIFT, System, systems, traffic, traffic congestion, transit, transportation, travel, traveler information, urban
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Murphy, J. | WA-RD 462.5 | SWIFT - Communications Study | 1998 | WSDOT/Science Applications International Corp |
Abstract:
This document discusses the rationale, procedures, results, discussion, and conclusions of the Seattle Wide-area-Information for Travelers (SWIFT) Communication Study evaluation that was conducted for the Washington State Department of Transportation. Included are background explanations of the issues involved in t researching, planning, and conducting the coverage testing that was conducted as part of this evaluation. For the purposes of this report, testing was accomplished using the SWIFT High Speed Data System (HSDS) as it was deployed in the Seattle, Washington, area by Seiko and configured to provide traffic incident, speed/congestion, and real-time bus position information to test participants during the SWIFT field operational test evaluation. The SWIFT system was designed to provide traffic incident speed/congestion, and real-time bus position information, among other information (e.g., personal paging and general information messages) to three receiving devices designed to use the Seiko HSDS FM sub-carrier system .
Authors:
Murphy, J., Costa, R.
Keywords:
SWIFT, traveler information, high speed data
This document discusses the rationale, procedures, results, discussion, and conclusions of the Seattle Wide-area-Information for Travelers (SWIFT) Communication Study evaluation that was conducted for the Washington State Department of Transportation. Included are background explanations of the issues involved in t researching, planning, and conducting the coverage testing that was conducted as part of this evaluation. For the purposes of this report, testing was accomplished using the SWIFT High Speed Data System (HSDS) as it was deployed in the Seattle, Washington, area by Seiko and configured to provide traffic incident, speed/congestion, and real-time bus position information to test participants during the SWIFT field operational test evaluation. The SWIFT system was designed to provide traffic incident speed/congestion, and real-time bus position information, among other information (e.g., personal paging and general information messages) to three receiving devices designed to use the Seiko HSDS FM sub-carrier system .
Authors:
Murphy, J., Costa, R.
Keywords:
SWIFT, traveler information, high speed data
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Dailey,D. J. | WA-RD 411.1/TNW 96-01 | ITS Backbone Design and Demonstration | 1996 | TRAC/UW |
Abstract:
Traffic congestion is an increasing problem in many areas of Washington state. Efforts to control traffic flows and mitigate congestion must rely on the ability to accurately monitor the state of traffic flow on highways and arterials. We present a conceptual framework for ITS development to monitor traffic conditions and show how this framework solves numerous high-level problems associated with ITS development. A sample instantiation, the Backbone project, demonstrates the viability of our unified ITS conceptual framework and shows that such a framework can be implemented at reasonable cost and with a high likelihood of successful operation. This project was sponsored by WSDOT and executed at the University of Washington.
Authors:
Dailey,D. J., Haselkorn,M., Lin,P.
Keywords:
traveler information, backbone, distributed computing, client server, research
Traffic congestion is an increasing problem in many areas of Washington state. Efforts to control traffic flows and mitigate congestion must rely on the ability to accurately monitor the state of traffic flow on highways and arterials. We present a conceptual framework for ITS development to monitor traffic conditions and show how this framework solves numerous high-level problems associated with ITS development. A sample instantiation, the Backbone project, demonstrates the viability of our unified ITS conceptual framework and shows that such a framework can be implemented at reasonable cost and with a high likelihood of successful operation. This project was sponsored by WSDOT and executed at the University of Washington.
Authors:
Dailey,D. J., Haselkorn,M., Lin,P.
Keywords:
traveler information, backbone, distributed computing, client server, research
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Dailey,D. J. | WA-RD 410.1 | ITS Data Fusion | 1996 | TRAC/UW |
Abstract:
This project has accomplished three significant tasks. First, a state-of-the-art literature review has provided an organizational framework for categorizing the various data fusion projects that have been conducted to date. A popular typology was discussed which situates data fusion technologies in one of three levels, depending on the degree to which sensor data is correlated to provide users with meaningful transit recommendations. The trade-offs that accompany higher-level data fusion efforts -- in terms of computing power and memory requirements -- were noted. The advantages of multiple-sensor data fusion projects in terms of cost, accuracy, and reliability were also discussed and contrasts were drawn with the traditional deployment of highly accurate, single sensors. Specific techniques of data fusion were described and their possible applications to ITS projects were explored. In fact, this report is one of the first to consider how data fusion technology might be productively applied to the needs of transportation management. A second major component of this report is the description provided of a local data fusion application. This project employs data fusion techniques to correlate input from multiple highway sensors and generate reliable traffic predictions. The resulting information can be displayed for use by commuters as they choose from among various transit options. The architecture of this data fusion system is described in detail. The third component of the project was to create a statistically based algorithm to estimate speed from volume and occupancy measurements. The algorithm presented explicitly accounts for the statistics of the problem and provides a robustness test for the speed estimate.
Authors:
Dailey,D. J., Harn,P., Lin,P.
Keywords:
traveler information, ITS backbone, distributed computing, client server model, ITS architecture, speed estimates, volume, occupancy, research
This project has accomplished three significant tasks. First, a state-of-the-art literature review has provided an organizational framework for categorizing the various data fusion projects that have been conducted to date. A popular typology was discussed which situates data fusion technologies in one of three levels, depending on the degree to which sensor data is correlated to provide users with meaningful transit recommendations. The trade-offs that accompany higher-level data fusion efforts -- in terms of computing power and memory requirements -- were noted. The advantages of multiple-sensor data fusion projects in terms of cost, accuracy, and reliability were also discussed and contrasts were drawn with the traditional deployment of highly accurate, single sensors. Specific techniques of data fusion were described and their possible applications to ITS projects were explored. In fact, this report is one of the first to consider how data fusion technology might be productively applied to the needs of transportation management. A second major component of this report is the description provided of a local data fusion application. This project employs data fusion techniques to correlate input from multiple highway sensors and generate reliable traffic predictions. The resulting information can be displayed for use by commuters as they choose from among various transit options. The architecture of this data fusion system is described in detail. The third component of the project was to create a statistically based algorithm to estimate speed from volume and occupancy measurements. The algorithm presented explicitly accounts for the statistics of the problem and provides a robustness test for the speed estimate.
Authors:
Dailey,D. J., Harn,P., Lin,P.
Keywords:
traveler information, ITS backbone, distributed computing, client server model, ITS architecture, speed estimates, volume, occupancy, research
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Dailey, D.J. | WA-RD 332.1 | Investigation of GPS and GIS for Traveler Information | 1994 | TRAC/UW |
Abstract:
Traffic congestion is an increasing problem in many areas of Washington State. Efforts to control traffic flows and mitigate congestion must rely on the ability to accurately monitor the state of traffic flow on highways and arterials. This project, sponsored by WSDOT and executed at the University of Washington, combines two important aspects of geodesy, geographical information systems (GIS) and the global positioning system (GPS), to produce a traveler information system. This project produced a computer application that draws a graphical representation of the transportation data (a map) on an X-terminal. This project also produced a second computer application to perform real-time vehicle positioning using GPS. These two applications operate in a client/server paradigm is used to combine location and congestion information on one, digitally generated map display.
Authors:
Dailey, D.J., Lin, P.
Keywords:
Traffic surveillance and control, GPS, GIS, traveler information, maximum likelihood, digital maps, distributed computing, client server
Traffic congestion is an increasing problem in many areas of Washington State. Efforts to control traffic flows and mitigate congestion must rely on the ability to accurately monitor the state of traffic flow on highways and arterials. This project, sponsored by WSDOT and executed at the University of Washington, combines two important aspects of geodesy, geographical information systems (GIS) and the global positioning system (GPS), to produce a traveler information system. This project produced a computer application that draws a graphical representation of the transportation data (a map) on an X-terminal. This project also produced a second computer application to perform real-time vehicle positioning using GPS. These two applications operate in a client/server paradigm is used to combine location and congestion information on one, digitally generated map display.
Authors:
Dailey, D.J., Lin, P.
Keywords:
Traffic surveillance and control, GPS, GIS, traveler information, maximum likelihood, digital maps, distributed computing, client server
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Dailey, D.J. | TRB 940424 | An Optimal Recursive Estimate for Detecting Traffic Anomalies using Real Time Inductance Loop Data | 1994 | Transportation Research Board |
Abstract:
This paper describes the use of an optimal recursive predictor (Kalman predictor) with inductance loop data to produce an anomaly detector. It details the construction of the system function or transition matrix, used in the optimal predictor, directly from the statistics of the problem. It demonstrates the use of a prediction algorithm with inductance loop data gathered on Interstate Five in Seattle, Washington. It discusses the scaling of thresholds necessary for anomaly detection but does not provide specific threshold values. This technique of dynamic prediction used with thresholds could have potential value to traffic management systems that rely heavily on inductance loop data.
Authors:
Dailey, D.J.
Keywords:
Traveler information, ITS backbone, distributed computing, client server model, ITS architecture, speed estimates, volume, occupancy, traffic surveillance and control, inductance loop data, traffic management systems, TRB
This paper describes the use of an optimal recursive predictor (Kalman predictor) with inductance loop data to produce an anomaly detector. It details the construction of the system function or transition matrix, used in the optimal predictor, directly from the statistics of the problem. It demonstrates the use of a prediction algorithm with inductance loop data gathered on Interstate Five in Seattle, Washington. It discusses the scaling of thresholds necessary for anomaly detection but does not provide specific threshold values. This technique of dynamic prediction used with thresholds could have potential value to traffic management systems that rely heavily on inductance loop data.
Authors:
Dailey, D.J.
Keywords:
Traveler information, ITS backbone, distributed computing, client server model, ITS architecture, speed estimates, volume, occupancy, traffic surveillance and control, inductance loop data, traffic management systems, TRB
Haselkorn,M. | WA-RD 240.2/TNW 91-04 | Real-Time Motorist Information For Reducing Urban Freeway Congestion: Commuter Behavior, Data Conversion and Display, an... | 1992 | TRAC/UW |
Abstract:
This report documents results of a project to design and develop a real-time, advanced traveler information system (now called Traffic Reporter) for the Puget Sound area. In previous work, we had identified four types of commuters: (1) Pre-trip Changers, (2) Route Changers, (3) Route & Time Changers, and (4) Non-changers. Each type of commuter showed distinct preferences and needs for design and delivery of traveler information. In this project, we confirmed that the commuter types identified earlier, as well as their preferences for design and delivery of traveler information, were consistent across geographical areas in the Puget Sound area. Based on knowledge of commuter behavior and information needs, we designed and began implementing Traffic Reporter, a PC-based, graphical, interactive, advanced traveler information system. The Traffic Reporter prototype receives traffic data from freeway detectors and coverts those data into information that can be explored both for general freeway conditions and specific trip information. Information is designed for use by commuters, traffic reporters, and traffic engineers. We conducted usability tests on the Traffic Reporter prototype to ensure its effectiveness and ease of use. Overall, these tests showed that the prototype is easy to use and will be accepted by commuters. Future development of Traffic Reporter will be guided by the result of these tests. Furthermore, we will continue usability testing on future versions of Traffic Reporter.
Authors:
Haselkorn,M., Barfield,W., Spyridakis,J., Conquest,L., Dailey,D. J., Crosby,P., Goble,B., Garner,M.
Keywords:
transportation management, IVHS, advanced traveler information systems, commuter behavior, real-time traveler information, traveler information
This report documents results of a project to design and develop a real-time, advanced traveler information system (now called Traffic Reporter) for the Puget Sound area. In previous work, we had identified four types of commuters: (1) Pre-trip Changers, (2) Route Changers, (3) Route & Time Changers, and (4) Non-changers. Each type of commuter showed distinct preferences and needs for design and delivery of traveler information. In this project, we confirmed that the commuter types identified earlier, as well as their preferences for design and delivery of traveler information, were consistent across geographical areas in the Puget Sound area. Based on knowledge of commuter behavior and information needs, we designed and began implementing Traffic Reporter, a PC-based, graphical, interactive, advanced traveler information system. The Traffic Reporter prototype receives traffic data from freeway detectors and coverts those data into information that can be explored both for general freeway conditions and specific trip information. Information is designed for use by commuters, traffic reporters, and traffic engineers. We conducted usability tests on the Traffic Reporter prototype to ensure its effectiveness and ease of use. Overall, these tests showed that the prototype is easy to use and will be accepted by commuters. Future development of Traffic Reporter will be guided by the result of these tests. Furthermore, we will continue usability testing on future versions of Traffic Reporter.
Authors:
Haselkorn,M., Barfield,W., Spyridakis,J., Conquest,L., Dailey,D. J., Crosby,P., Goble,B., Garner,M.
Keywords:
transportation management, IVHS, advanced traveler information systems, commuter behavior, real-time traveler information, traveler information
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