Roadside Hazards, Traffic Barriers, and Safety Appurtenances

摘要

The 7 papers in this report deal with the following areas: effect of cargo displacement on vehicle collision behavior; the rural mailbox: a little-known roadside hazard; crash tests of construction-zone traffic barriers; portable concrete median barriers: structural design and dynamic performance; evaluation of the performance of portable precast concrete traffic barriers; cost-effectiveness of guardrail-bridgerail transition improvements: double w-beam versus decreased post spacing; and conflicts between vehicle traffic and utility facilities.