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
Work Zones
Evaluation of Work Crew and Highway Hazard Conspicuity
The report quantitatively addresses conspicuity of highway features, particulary in work zones, from the perspective of driver detection and driver decision making. The study focuses on evaluating the … [Read more...] about Evaluation of Work Crew and Highway Hazard Conspicuity
Optimal Work Zone Lengths for Two-Lane Highways
Highway pavement maintenance is very expensive not only in terms of costs to the responsible agencies, but also in terms of disruptive delays to users. Construction and maintenance activities on … [Read more...] about Optimal Work Zone Lengths for Two-Lane Highways
Evaluation of Speed Limits in Kentucky
The objectives of this study were to examine current criteria and procedures used for setting speed limits on public roads and to recommend appropriate speed limits for various types of roadways. The … [Read more...] about Evaluation of Speed Limits in Kentucky
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