State departments of transportation, metropolitan planning organizations, public transit authorities, and other transportation stakeholders increasingly are turning to the use of transportation system performance measures to gain and sustain public and legislative support for investments in managing, maintaining, and constructing transportation infrastructure. Measures that express congestion and mobility in terms that system users can understand and use are needed for use in systems planning, corridor development, priority programming, and operations to inform investment decisions directed at improving system performance. This report presents a framework and cost-effective methods to predict, measure, and report travel time, delay, and reliability from a customer-oriented perspective. (Author/publisher) This report may be accessed by Internet users at http://onlinepubs.trb.org/onlinepubs/nchrp/nchrp_rpt_618.pdf
Abstract