Re-test and regression test
In October 2014, the FHWA requested that Trinity arrange for crash tests of 4 inches ET-Plus to an accredited independent laboratory, the tests were conducted at the Southwest Research Institute SwRI: an independent laboratory certified in December 2014 and January 2015, the purpose of the tests was to restore the baseline to ensure that the eT-plus complies with crash test criteria that are applicable to this device, the criteria NCHRP-350 test criteria that were applied to the 1993-2011 road safety equipment and to which the majority of roadside safety devices on the road network in the nation currently comply.
4 tests a railing height of 27 75 inches the test height, txkvNCpCZEy necessary Trinidad; and.
4 tests in a 31-inch guardrail height the height of the guardrail from tests in 2005.
FHWA has worked to ensure the integrity and transparency of the reanalysis AND-Plus.
FHWA requested that the tested devices be selected from the inventory of a State DOT This was to ensure that the devices were fully representative of the devices actually on the road test devices were purchased from Caltrans FHWA enlisted an independent expert, Dr. Clay Gabler, with Virginia Tech, to evaluate the test facility of the review of Dr. Gabler fully confirms the integrity of the tests SwRI.
FHWA experts were present in each test, reviewed the implementation, including heads of posts and device measurements witnessed the tests themselves, and conducted a post-test evaluation of engineering devices at least eight of the state DOTs also used the occasion Dr. Gabler saw four tests and provided the same access to test items, set up and test examination after the accident as provided for FHWA and DOT representatives state.
At the encouragement of the FHWA, two openings were made available to the media to observe the crash tests also a media helicopter was seven of eight trials FHWA and AASHTO representative was available after each crash test to meet media question.
SwRI, FHWA and Dr. Gabler each independently assessed the results of crash tests concluded independently that the ET-Plus meets the criteria NCHRP 350 at a time to 27 to 75 inches and a height of 31 inches.
We published the results of tests, results and related information below so that all who wish to compare crash test data against standards applicable to the device can receive all data and complete.
Retest the FHWA andmore Review andmore Federal Highway Administration, retesting, FHWA review.