MASH TEST 3-11 of the TxDOT T222 Bridge Rail
Author(s):
W.F. Williams, R.P. Bligh, W.L. Menges
Publication Date:
July 2016
Abstract:
The objective of this reserach was to evaluate the impact performance of the TxDOT Type T222 Bridge Rail according to the Manual for Assessing Safety Hardware (MASH) TL-3. The crash testing was performed in accordance with the requirements of MASH TL-3. This report describes the TxDOT T222 Bridge Rail, documents the performance of the rail system according to MASH TL-3 specifications, and presents recommendations regarding implementation and future work.
The TxDOT T222 Bridge Rail contained and redirected the 2270_ vehicle. The vehicle did not penetrate, underride, or override the installation. Maximum dynamic deflection during the test was 2.1 inches. No detached elements, fragments, or other debris was present to penetrate or to show potential for penetrating the occupant compartment, or to present hazard to others. Maximum occupant compartment deformation was 4.0 inches in the kick panel are near the right front passenger's feet. the 2270P vehicle remained upright during and after the collision event. Maximum roll and pitch angles were 7 degrees and 12 degress, respectively. Occupant risk factors were within the limits specified in MASH. The vehicle exited within the exit box criteria. The TxDOT T222 Bridge Rail performed acceptably for MASH test 3-11. This barrier is recommended for implementation on new construction, retrofit applications, and in temporary applications in construction work zones.
Report Number:
9-1002-12-13
Electronic Link(s):
Document/Product
http://tti.tamu.edu/documents/9-1002-12-13.pdf
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