Article discussing the costs associated with the use of concrete barriers as compared to portable water-filled barriers. … [Read more...] about Life-Cycle Costs and Work-Zone Equipment
Parts of Roads
Approach Guardrail Transition for Concrete Safety Shape Barriers
An approach guardrail transition, consisting of three-beam guardrail, steel posts, structural tube spacer blockouts, and a New Jersey connector plate, was developed and full-scale crash tested for use … [Read more...] about Approach Guardrail Transition for Concrete Safety Shape Barriers
Report on Emergency Access Openings in Soundwalls and Concrete Median Barriers
House Resolution No. 15, adopted March 30, 1991, requested that the Department of Transportation (Caltrans) conduct a study to determine the need and consider standards for installing removable … [Read more...] about Report on Emergency Access Openings in Soundwalls and Concrete Median Barriers
Recommended Practices for Use of Traffic Barrier and Control Treatments for Restricted Work Zones
Many construction projects require the use of traffic barriers to adequately protect the motoring public and construction workers. Geometric and operational restrictions in these work zones frequently … [Read more...] about Recommended Practices for Use of Traffic Barrier and Control Treatments for Restricted Work Zones
Development of a Low-Profile Portable Concrete Barrier
A low-profile portable concrete barrier (PCB) has been developed for use in low-speed [approximately 45 mph (73 km/hr) or less] work zones. The purpose of the low-profile barrier is to shield the work … [Read more...] about Development of a Low-Profile Portable Concrete Barrier
International Harmonization of Testing and Evaluation Procedures for Roadside Safety Features – German Testing Procedures
This Circular contains the proceedings of a workshop sponsored by the Transportation Research Board (TRB) Committee A1A04 on Roadside Safety Features and the Federal Highway Administration. The … [Read more...] about International Harmonization of Testing and Evaluation Procedures for Roadside Safety Features – German Testing Procedures