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MASH Test Level 2 (TL-2) Short Radius Guardrail Treatment for Texas Roadways

Customizing Guardrails for Hard-to-design-for Intersections

What Was the Need?

When a secondary road or driveway intersects a highway quite close to a bridge, it is difficult to fit a standard guardrail along the primary roadway to properly protect motorists. One solution is to apply a tight radius to the guardrail in order to turn it from the primary road to the secondary road. While Texas A&M Transportation Institute (TTI) researchers have developed an innovative short-radius guardrail system, many low-speed roadways are configured so that they cannot accommodate these modified guardrails.

What's the Solution?

Researchers developed a short-radius guardrail system for use on low-speed roadways, designed to meet American Association of State Highway and Transportation Officials’ Manual for Assessing Safety Hardware (MASH) Test Level 2 (TL-2) performance criteria.

Research Benefits

TxDOT now has a crashworthy short-radius design that can be used on low-speed roadways.

Project Number

0-6913

Status

Completed

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