The SHRP2 L02 project is being carried out to “develop system designs for programs to monitor travel time reliability and to prepare a guidebook that practitioners and others can use to design, build, operate, and maintain such systems.” The Guidebook is intended to help agency staff identify fun
This study identifies 58 roundabout corridors in the United States as of 2011. There is diversity among these corridors in terms of length, roundabout spacing, number of lanes, surrounding land use, previous control (if not a new facility), and reasons for the selection of roundabouts.
This report examines the state of the practice and presents guidelines on the performance measurement and evaluation of congestion pricing projects. Congestion pricing projects include variably priced managed lanes (HOT or Express Toll Lanes), toll facilities with variable pricing, and cordon or
The SHRP2 L10 project is intended “to examine existing studies using video cameras and other onboard devices to collect data and determine the potential for using these data to explore how to modify driver behavior in an attempt to reduce non-recurring congestion.” It was found that the majority
A comprehensive and systematic review of current practice, synthesizes the range of things DOTs can do, and in some cases are doing, to ease their response effort, secure appropriate reimbursements, and simplify cost identification.
The report assesses the feasibility of employing predictive algorithms driven by historical and real-time traffic data to provide pre-trip, time-dependent travel time information based on origin, destination, and departure time. MyRoadTripAdvisor.com is working prototype of a forecasting ser
TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2396 consists of 16 pages that explore collisions in freeway traffic; self-learning adaptive ramp metering; macroscopic travel time reliability diagrams for freeway networks; the impact of heavy vehicles on fr
