Abstract: Emergency preparedness is vital toward ensuring the safety, security, and efficiency of the transportation system in the event of disasters. To understand the magnitude of the problem and develop effective emergency ...

Abstract: This paper compares the performance of roundabouts with four leg intersections under yield control, two- and four-way stop control, and signal control for various traffic conditions using the SIDRA package. Such conditions ...

Abstract: High-speed intersections pose a safety and operational challenge. Currently, no specific guidance for treating high-speed intersections exists, particularly in the case of intersections with substantial truck traffic. To ...

Abstract: Active warning systems are traffic control devices consisting of variable signs or flashing beacons with conventional warning signs, which are activated by sensors detecting real-time roadway, environmental, and operational ...

Abstract: Federal rules mandate state departments of transportation and metropolitan planning organizations to measure and report on the performance of highways within their jurisdictions. Those rules support an initiative for ...

Abstract: During evacuations, the needs of transit-depended and carless populations require special attention and add to the complexity of evacuation logistics. The objective of this paper is to examine the role of transit in the ...

Abstract: This study analyzed candidate hydrogen-fueled vehicles for near and long-term use associated with their efficiency, performance, and emissions. Various types of hydrogen-fueled vehicles were assessed using Argonne National ...