As suburban and urban areas infill, more bicyclists and pedestrians may use arterial corridors, and conflict with motor vehicles and resulting crashes can increase. When residents demand protection from traffic dangers to create more walkable, livable neighborhoods, state DOTs are increasingly called on to shift their focus from exclusively measuring the level of service provided to drivers, to designing for the safety and accessibility of pedestrians and cyclists.
Researchers apply travel time reliability measures in modeling and project evaluation
Transportation planners and traffic analysts who typically measure road performance in terms of delay are beginning to incorporate measures of travel time reliability, which describe the hourly and daily variation in travel times due to congestion and transit delay. Two new reports prepared for the Strategic Highway Research Program (SHRP 2) provide a better understanding of the value of travel time reliability, and also insight into what might be the most appropriate uses for such measures.