The purpose of the tests reported herein was to assess the performance of the large sign slip base support according to the safety-performance evaluation guidelines included in the second edition of the American Association of State Highway and Transportation Officials (AASHTO) Manual for Assessing Safety Hardware (MASH) (1). The crash tests were performed in accordance with MASH 3-62, which for this project included three crash tests with the following criteria:
For Test 612261-04-1 & -05-1
MASH Test 3-62: An 2270P vehicle weighting 5,000 lb impacting the support structure while traveling at 62 mi/h and 0 degrees.
For Test 612261–05-2
MASH Test 3-62: An 2270P vehicle weighting 5,000 lb impacting the support structure while traveling at 62 mi/h and 25 degrees.
This report provides details on the large sign slip base support, the crash tests and results, and the performance assessment of the large sign slip base support for MASH 3-62 support structure evaluation criteria.
The large sign slip base support met the performance criteria for MASH 3-62 support structures.