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Air Rail Highway Bike/Ped Public Transit
Crashworthiness of Thin-Walled Aluminum and Steel U-Channel Sign Posts
Project ID: 95-8
Researcher: Texas Transportation Institute
Status: Completed

The NHDOT has utilized dual aluminum direct-burial tube supports and steel u-channel for much of its highway signing. Current Federal Aid requirements allow only the use of supports that have been crash tested in accordance with NCHRP 350 guidelines. The Department, in cooperation with the Vermont Agency of Transportation, contracted to have a series of crash tests performed at the TTI Proving Ground in Texas.

Final Report


For more information contact the NHDOT Research Engineer at (603) 271-3151

New Hampshire Department of Transportation
PO Box 483 | 7 Hazen Drive | Concord, NH | 03302-0483
Tel: 603.271-3734 | Fax: 603.271.3914

copyright 2015. State of New Hampshire