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ABSTRACT

This report documents three full-scale crash tests conducted to evaluate the safety performance of the Hawaii Department of Transportation’s Hawaii Modified Delaware Retrofit Thrie-Beam Bridge Rail according to the Manual for Assessing Safety Hardware, Second Edition (MASH 2016) Test Level 3 (TL-3) crash test criteria. The bridge rail consisted of 10-gauge thrie-beam rail with 32-in. mounting height, supported by W6x25 steel posts, spaced at 75 in., and installed on a concrete sidewalk. Test no. HMDBR-1 was conducted using test designation no. 3-11 on a 9-in. tall sidewalk configuration. Test nos. HMDBR-2 and HMDBR-3 were conducted to test designation nos. 3-10 and 3-11, respectively, with a 6-in. tall sidewalk configuration. In test no. HMDBR-1, a 2014 Dodge Ram pickup truck impacted the system at a speed of 63.1 mph and an angle of 25.5 degrees. In test no. HMDBR-2, a 2016 Hyundai Accent impacted the system at a speed of 62.5 mph and an angle of 24.5 degrees. In test no. HMDBR-3, a 2015 Dodge Ram pickup truck impacted the system at a speed of 63.3 mph and an angle of 25.5 degrees. In all tests, the bridge rail successfully contained and safely redirected the test vehicles. All occupant risk measurements were found to be within the established MASH 2016 limits. Therefore, test nos. HMDBR-1, HMDBR-2, and HMDBR-3 were deemed to have satisfied all safety performance criteria, and the Hawaii Modified Delaware Thrie-Beam Bridge Rail installed on a 6-in. to 9-in. tall concrete sidewalk was determined to be crashworthy according to MASH 2016 TL-3.

KEYWORDS

Highway Safety, Crash Test, Roadside Appurtenances, Bridge Rail, Compliance Test, MASH 2016, Test Level 3, Modified Delaware Retrofit Thrie-Beam Bridge Rail

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