This project is looking to improve the monitoring of travel time reliability in both urban and rural areas of Washington state by using products from the Strategic Highway Research Program (SHRP) such as SHRP2 reliability data analysis tools. The researchers will create an integrated database within the online traffic data analysis platform Digital Roadway Interactive Visualization and Evaluation Network (DRIVE Net). That database will merge both freeway loop detector and probe vehicle data from multiple sources, so that the implemented functions will be able to generate improved travel time reliability measures for different roadway facilities during different time periods. Furthermore, the use of other data sources, such as for weather and incident data, will enable analysis of travel times under non-recurrent congestion conditions. In further testing, previously calculated travel time reliability data will be used to determine the reliability of level-of-service calculations. The evaluation results will also be used to provide guidance that will help states and metropolitan planning organizations with planning and programming tasks.
Principal Investigators:
Yinhai Wang, Civil and Environmental Engineering, UW
Mark E. Hallenbeck, Washington State Transportation Center, UW
Sponsor: WSDOT
WSDOT Technical Monitor: Monica Harwood
WSDOT Project Manager: Doug Brodin
Scheduled completion: September 2018