Jeremiah Singer (Westat), A. Emanuel Robinson
Jessica Krueger (Westat), Jennifer E. Atkinson
(SAIC), Matthew C. Myers (SAIC)
8. Performing Organization
9. Performing Organization
Name and Address
1600 Research Blvd.
Rockville, MD 20852
1710 SAIC Dr.
McLean, VA 22102
10. Work Unit No.
Agency Name and Address
United States Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
13. Type of Report and Period
August 27, 2012 – April 30, 2013
Travel time to a destination is a key piece of information that motorists want and need, and is vital for good decisionmaking
by travelers. Technology now makes it feasible to provide drivers with real-time information about how long it
takes to reach a given destination. The collection of travel time data is a challenging problem that deserves a systematic
review. The purpose of this project was to identify, review, and synthesize information on current and potential future
efforts in real-time travel time on arterials. The current report focuses on arterial highway travel time data technology
considerations and is not a primer for general travel time best practices. Also, a companion report on rural travel time data
collection technology can be found in Singer, Robinson, Krueger, Atkinson, & Myers (2013). The core of the report discusses
available and emerging arterial travel time (ATT) data sources as well as implementation considerations, advantages, and
limitations of each. These technologies researched include Bluetooth detectors, toll tag readers, in-pavement magnetic
detectors, automatic license plate readers (ALPR), machine vision, connected vehicle, radar/microwave/LIDAR, inductive
loops, crowdsourcing, and cell phone signal monitoring. Several implementations of ATT data collection are also discussed.
In addition, two case studies are reviewed in detail (Chandler, AZ and St. Louis, MO). The report then emphasizes key lessons
learned based on questions for a practitioner to consider at each step of the planning, implementation, and management
process. Although ATT data collection is a relatively new and rapidly evolving area, ATT can be successfully implemented
when a project is properly planned and executed. Successful implementers have carefully considered project objectives and
have provided detailed implementation plans. Regardless of the latest specific data collection technology, asking the right
questions is paramount, beginning with planning, continuing to selection, and culminating with execution and evaluation.
Practitioners who focus on asking the right questions and heed lessons learned by colleagues will greatly increase the
chances of a successful implementation.
17. Key Words
Intelligent Transportation System (ITS), real-time travel time, arterial travel time
(ATT), travel time data collection technology, Advanced Traveler Information
System (ATIS), Transportation Management Center (TMC)
18. Distribution Statement