Development of Two Test Level 2 Bridge Railings and Transitions for Use on

oratory and FHWA, designed two bridge railing and approach guardrail transition systems for use on transverse glue-laminated timber deck bridges. The bridge railing and transition systems were developed and crash tested for use on medium-service roadways and evaluated accord-ing to the Test Level 2 safety performance criteria provided in NCHRP Report 350. The first railing system was constructed by using steel hard-ware, whereas the second railing system was built by using glulam tim-ber components. Four full-scale crash tests were performed, and the bridge railing and transition systems were determined to be acceptable according to the current safety standards in NCHRP Report 350. For more than 30 years, numerous bridge railing systems have been developed and evaluated according to established vehicular crash testing standards. Most bridge railings tested consisted of concrete, steel, and aluminum railings attached to concrete bridge decks. It is well known that a growing number of timber bridges with transvers