Abstract: Using Virginia’s statewide multimodal plan as a case study, this paper outlines an approach to evaluating policies that coordinate the transportation-related efforts of individual agencies. The approach entails identification ...

Abstract: The addition of interchanges, traffic signals, or unsignalized driveways to an arterial corridor increases crash risk and decreases travel speeds. As adjacent vacant land is developed, however, private landowners often ...

Abstract: Transportation planning applications typically calibrate models for a base year and then make forecast year projections. However, modelers rarely evaluate the accuracy of their forecasts by using past data sets to predict ...

Abstract: The process of transportation planning begins with an assumed land use and then projects future traffic volumes. To determine land-use limitations as a function of the capacity of the transportation system, we reversed the ...

Abstract: Transportation agencies may review proposed projects that were not examined as part of the long range planning process. Typically, these projects require an immediate response and lack detailed data. This paper describes ...

Abstract: To compare the safety effects of a uniform speed limit (USL) for all vehicles as opposed to a differential speed limit (DSL) for cars and heavy trucks, detailed crash data for six states were obtained for rural interstate ...

Abstract: Traffic volume forecasts are fundamental to policymaking; yet, the impacts of forecast errors are rarely considered. Accordingly, traffic forecasts in 39 studies were compared to observed volumes after the forecast year ...

Abstract: Providers of civil engineering infrastructure face increasing pressure to apply information technology. Unfortunately, technology's rapid evolution renders it easy to acquire expensive equipment that quickly becomes obsolete. ...

Abstract: This study developed measures of effectiveness (MOEs) to quantify the influence of recommendations from a long-range transportation plan (LRTP) on the implementation of projects in a statewide transportation program. MOEs ...

Abstract: Several methods for designing concrete block pavements (CBP) for roads and streets are presently available. All recognize the need to consider the subgrade soil, paving materials, environment, and anticipated traffic. There ...