Rear-end collisions cause the preponderance of work zone crashes in Virginia, indicating that a high variance in vehicle speeds is the major cause of accidents in work zones, according to a … [Read more...] about Speed Variations Are Major Cause of Work Zone Crashes
Traffic Characteristics
An Artificial Neural Network Speed Profile Model for High-Speed Highway Construction Work Zones
Speed profile models can be used by highway engineers to assess the adequacy of a design. Previous work has investigated relationships between operating speed and geometric roadway elements for … [Read more...] about An Artificial Neural Network Speed Profile Model for High-Speed Highway Construction Work Zones
Artificial Neural Network Speed Profile Model for Construction Work Zones on High-Speed Highways
Speed profile models can be used as a diagnostic tool by highway engineers. Previous work has investigated relationships between operating speed and geometric roadway elements for permanent roadway … [Read more...] about Artificial Neural Network Speed Profile Model for Construction Work Zones on High-Speed Highways
Lighted Guidance Devices: Intelligent Work Zone Traffic Control
Annually, thousands of highway workers risk serious injury and death from drivers who enter work zones too fast or accelerate after entering the zone and then, because of their excess speed relative … [Read more...] about Lighted Guidance Devices: Intelligent Work Zone Traffic Control
Flow Characteristics at Freeway Work Zones and Increased Deterrent Zones
Traffic-flow characteristics were studied at two work zones on suburban freeways and at a third freeway site where a police patrol car, easily noticed by drivers, was parked on the right shoulder. The … [Read more...] about Flow Characteristics at Freeway Work Zones and Increased Deterrent Zones
Integration of Real-Time Air Pollution Parameters into the Decision Making Process Regarding Highway Construction Work Zone Traffic Flow
The Midac Fourier Transform Infrared air monitoring system was used to measure real-time vehicular exhaust emission concentrations of carbon monoxide (CO) and hydrocarbons (HCs) during the Purdue … [Read more...] about Integration of Real-Time Air Pollution Parameters into the Decision Making Process Regarding Highway Construction Work Zone Traffic Flow