How does driving experience help in the development of situation awareness? A comparison of detection rates of roadway hazards that involved other road users by inexperienced and experienced car drivers and experienced motorcycle riders with car driving experience was conducted under laboratory conditions. Motorcycle rider-drivers, due to their greater breadth of road experiences, were predicte...

Information on 2558 persons treated for injuries incurred while bicycling or walking was collected from eight hospital emergency departments over approximately a one-year time period. The emergency departments represented a mix of urban and suburban/rural sites in three states--California, New York, and North Carolina. The data were collected on special survey forms and included detailed inform...

The use of newly emerging sensor technologies in traditional roadway systems can provide real-time traffic services to drivers through Telematics and Intelligent Transport Systems (ITSs). This paper introduces a smart roadside system that utilizes various sensors for driver assistance and traffic safety warnings. This paper shows two road application models for a smart roadside system and senso...

This paper presents a dynamic intermodal freight network scheme using a Discrete Element Method (DEM) approach for performing the microscopic simulation. The model is applied to a roadway network for freight movements from a port terminal. This approach was used to develop efficient control strategies for optimizing freight flow. The simulation model has various applications with the primary fo...

The demands on a driver to maintain a consistent path is reflected in the driver’s workload. Visual demand, which can be measured using vision occlusion, can be used to quantify driver workload. Vision occlusion blanks out the driver’s vision of the roadway using a visor or other similar device. By measuring the amount of time the driver is viewing the roadway, a measure of the information load...

The US Army Research Laboratory designed, developed and tested a novel switched beam radar system operating at 76 GHz for use in a large autonomous vehicle to detect and identify roadway obstructions including slowly-moving personnel. This paper discusses the performance requirements for the system to operate in an early collision avoidance mode to a range of 150 meters and at speeds of over 20...

Aiming at the surrounding rock failure of heterogeneous and unequal pressure circular roadways, approximate analytical algorithm plastic zone is proposed. Through comparison calculations numerical simulation, shape characteristics evolution law rock’s are studied, relative error two calculation methods analyzed. The results show following: (1) With an increase or decrease in lateral coefficient...