Research News

Guidelines for Obtaining AADT Estimates from Non-traditional Sources

Passively collected traffic data from sources such as smart phones, vehicle transponders, and vehicle tracking devices have great potential to determine traffic volume information such as annual average daily traffic (AADT). This project developed a guide that contains a comprehensive technical checklist and data quality acceptance criteria that highway agencies can use to purchase or test traffic volume estimates such as AADT from private sector vendors that base those estimates on non-traditional data sources.

Supporting a Living Flora of the Pacific Northwest, 2nd Edition: Expanding Online Resources and Updating Identification Keys with New Information

Flora of the Pacific Northwest, 2nd Edition, published in October 2018 by the University of Washington Herbarium, Burke Museum, provides users with dichotomous keys to 5,085 wild-growing Pacific Northwest native and introduced plant species. This project expanded the existing Flora 2nd edition website to include automatically updating distribution maps for all taxa in the book and produced revised identifications keys for families, genera, and species that have undergone taxonomic changes.

Accessible Transportation Technologies Research Initiative Performance Metrics and Evaluation

Many agencies and companies are interested in developing technologies that will remove barriers to mobility and transportation for individuals with disabilities, but how can the success of such technologies be accurately evaluated? This project created a framework that the U.S. Department of Transportation’s Accessible Transportation Technologies Research Initiative (ATTRI) can use to develop evaluations of new technologies intended to improve mobility for people of all abilities.

Adjustments to the Public Records Act to Allow for Advanced Transportation Operations and Management

Individuals provide substantial amounts of data about themselves to private transportation companies and others in connection with their requests for transportation services. This project developed recommended changes to the state’s Public Records Act that will enable the state’s public agencies to obtain and use a variety of new electronic data that describe transportation system use of individuals, vehicles, and companies, without releasing to the public detailed data that could compromise the privacy of individuals and the trade secrets of companies.

Advancing Multimodal Safety by Reducing Pedestrian Crash Potential

Although crash fatalities have decreased for motor vehicles in Washington state, pedestrian fatalities have remained relatively steady. To help WSDOT prioritize safety-related pedestrian projects, this study used data from a variety of sources to develop pedestrian risk models that identify the characteristics that contribute to pedestrian crashes that result in severe injuries and fatalities and the locations that are most likely to benefit from investments aimed at zero pedestrian fatalities and zero serious injuries.

Characterization of Seattle’s Commercial Traffic Patterns: A Greater Downtown Area and Ballard/Interbay Vehicle Count and Evaluation

This project was designed to deliver crucial granular baseline data on commercial vehicle movements in key areas of Seattle to help city transportation professionals plan for increasing goods movement and service activities. It produced Seattle’s first complete estimate of Greater Downtown area traffic volumes, and it offered a detailed analysis of commercial vehicle traffic in and around one of the city’s major industrial centers, the Ballard-Interbay Northern Manufacturing Industrial Center. In doing so, it produced a critical snapshot of the detailed data needed for effective policy and planning, potentially informing everything from road maintenance and traffic signals to electric vehicle charging station sites and possible proposals for congestion pricing.

The Impact of Shared Mobility Options on Travel Demand

The increasing availability of shared mobility options is affecting travel behavior and travel demand. Smartphone-based technology has permitted the rapid spread of shared mobility options, which has affected how people use traditional travel modes. Although transportation policies need to consider these changes, a lack of data impedes the development of programs and policies that could address both the positive and negative aspects of the new travel options. This project aimed to provide much needed information about how app-based shared mobility options affect the demand for traditional private individual and public transit travel.

Evaluation of the Use and Performance of Via to Transit in the Puget Sound Region

The Via to Transit service in the Puget Sound region was a pilot implementation of an on-demand transit access service that connected riders going to or from five Sound Transit Link light rail stations with their trip origins/destinations. This project demonstrated the viability of a public agency partnership with a private sector transportation network company and evaluated the results of providing the pilot Via to Transit on-demand, first-mile/last-mile access to transit services.

Development of a Protocol to Maintain the Winter Mobility of Different Classes of Pervious Concrete Pavement Based on Porosity

Municipalities in the Pacific Northwest are increasingly using pervious concrete pavements (PCP). While this class of pavements offers significant ecological advantages, transportation departments must ensure that the pavements are safe for drivers and pedestrians in the region’s typical adverse winter conditions. To assist transportation departments in implementing more effective winter operations, this study aimed to develop a simple, image-based method to characterize the porosity of PCP.

A Construction Project Classification Framework: Mapping the Dimensions for Classification of Pacific Northwest Highway Project Types

Although construction projects differ in terms of size, materials, location, construction methods, and complexity, a proper classification system for project types does not exist. To help administrators of highway projects find consistency in data gathering and reporting, and validity in their analyses of contract performance, this project developed a framework for classifying project types.

Washington State Transportation Center