An end treatment was developed and crash tested to shield the ends of the concrete safety shape barrier (CSSB) and other narrow rigid objects. It was designed as a temporary treatment for use … [Read more...] about End Treatment for Concrete Barriers Used in Work Zones
Work Zones
High Visibility Garments for Use in Work Zones
The increase in accidents involving personnel in construction and maintenance zones prompted a review of the use of high visibility safety garments. This review led to laboratory and field studies … [Read more...] about High Visibility Garments for Use in Work Zones
Model to Calculate the Road User Costs at Work Zones
This report presents a model, QUEWZ, which can be used to calculate the user costs resulting from lane closures through a work zone. QUEWZ calculates the delay costs and speed-change cycling costs of … [Read more...] about Model to Calculate the Road User Costs at Work Zones
Field Evaluation of Flashing Arrowboards at Freeway Work Zones
This report documents research conducted in the evaluation of flashing arrowboards when located in advance of lane closure work zones. The effects of supplemental arrowboard placement were compared to … [Read more...] about Field Evaluation of Flashing Arrowboards at Freeway Work Zones
Traffic Capacity Through Work Zones on Urban Freeways
The report summarizes findings of capacity studies conducted at urban freeway maintenance and construction work zones in Houston and Dallas. Studies were conducted on 5-, 4-, and 3-lane freeway … [Read more...] about Traffic Capacity Through Work Zones on Urban Freeways
Effects of Work Zone Detours on Rural Highway Traffic Operations
The study examines tow US 59 work zone sites and their impact on rural highway traffic. After first recording typical traffic under free-flow conditions (using infrared sensors and reflectors mounted … [Read more...] about Effects of Work Zone Detours on Rural Highway Traffic Operations