American Association of State Highway and Transportation Officials ...
356 pages - Publisher: AASHTO; 4th edition (2011) ...
Language: English - ASIN: B007PCJ5OI by Amazon Digital Services ...

Roadside Design Guide 4th Edition (RSDG-4) presents a synthesis of current information and operating practices related to roadside safety and is written in dual units, metric and US Customary. It is intended to be used as a resource document from which individual highway agencies can develop standards and policies. It includes a synthesis of current information and operating practices related to roadside safety. It focuses on safety treatments that can minimize the likelihood of serious injuries when a motorist leaves the roadway. This guide was written for use by design engineers and professionals involved in roadside safety and is considered a significant toll that combines current research with practical experience. This publication has been updated to include hardware that has met the evaluation criteria contained in the National Cooperative Highway Research Program (NCHRP) Report 350: Recommended Procedures for the Safety Performance Evaluation of Highway Features and begins to detail the most current evaluation criteria contained under the Manual for Assessing Safety Hardware, 2009 (MASH). For the most part, roadside hardware tested and accepted under older guidelines that are no longer applicable has not been excluded in this edition. Includes 2015 errata.

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