The American Association of State Highway and Transportation Officials (AASHTO) approved December 31, 2019 as the date any installation of new and replacement sign supports must meet new crash-testing standards.
The standards, presented in AASHTO's Manual for Assessing Safety Hardware (MASH), lay out the guidelines for what crash-testing highway safety features need to be met on the National Highway System.
"The nation's motor vehicle fleet continues to evolve, and our roadside hardware must keep pace," said AASHTO Executive Director Bud Wright in a statement released late last year. "It's important that AASHTO and the transportation safety community support the design and manufacture of roadside devices that meet the safety needs of America's changing vehicle fleet."
In order to keep pace with the standards laid out in MASH, NuCor Steel Marion, Inc. – the nation's established leader in steel u-channel sign posts – put their u-channel breakaway systems to the test.
The test (3-62), conducted by the Texas A&M Transportation Institute, analyzed three key criteria during the vehicle crash test:
- Structural adequacy of the u-channel sign post
- Occupant risk upon vehicle collision with the u-channel sign post
- Vehicle trajectory after impact
The crash test concluded the NuCor 4 lb/ft steel u-channel sign post, and each subsequent u-channel sign post manufactured by NuCor Steel Marion, Inc., successfully met the MASH evaluation criteria for test 3-62. To get a full copy of the report, click here.
Local municipalities and state DOTs installing new or replacing existing sign posts after Dec. 31, 2019 that don't meet the MASH requirements may expose themselves to future liability risks.
If you need to install or replace u-channel sign posts for your next project, browse NuCor's crash-tested, federally approved u-channel posts today!