The Kentucky Department of Highways has an in-house recycling operation for used guardrail and guardrail posts. The used materials are obtained from removal of existing guardrail included in normal … [Read more...] about Salvaged and/or re-galvanized guardrail on construction projects
Barriers (Roads)
Salvaged and/or re-galvanized guardrail on construction projects
New Hampshire allows the use of salvaged and/or re-galvanized guardrail in lieu of new guardrail. Under what circumstances will the state agency authorize its use? - Temporary guardrail. How does … [Read more...] about Salvaged and/or re-galvanized guardrail on construction projects
Protection for bridge ends or other fixed objects in two-lane two-way operations
Alabama DOT uses guardrails at bridge ends for protection. Judgments are made in the field about the need to remove fixed objects or provide barrier protection. Usually guardrail protection is used. … [Read more...] about Protection for bridge ends or other fixed objects in two-lane two-way operations
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
Evaluation of Traffic Controls for Highway Work Zones
The objective of this research was to evaluate the effectiveness of channelizing traffic control devices and to determine how these devices should be designed and used to guide drivers as they … [Read more...] about Evaluation of Traffic Controls for Highway Work Zones
Portable Traffic Barrier for Work Zones
A portable, positive construction zone barrier is described. The barrier is suitable for use at sites where work will take as little as several hours. It is constructed from used cars and thrie-beam … [Read more...] about Portable Traffic Barrier for Work Zones