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
Work Zones
Traffic Capacity, Speed, and Queue-Discharge Rate of Indiana’s Four-Lane Freeway Work Zones
In addition to traffic capacity, vehicle speeds and queue-discharge rates at work zones are essential in assessment of work zone traffic delays and user costs. The traffic flow characteristics of … [Read more...] about Traffic Capacity, Speed, and Queue-Discharge Rate of Indiana’s Four-Lane Freeway Work Zones
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
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