01476938

Component

http://www.trb.org/Publications/Blurbs/168537.aspx

The United Kingdom's safety barrier standard (TD 19/85),was written primarily for new road schemes and there was a need to manage risks for other types of work, e.g., improvement schemes and upgrades that affect the alignment and speed of traffic. As an interim measure, until a risk-based standard could be produced, the Interim Requirement for Road Restraint Systems (RRS) document was published in July 2002 which brought together and revised the requirements in all vehicle restraint systems (VRS) and related standards into one document. Following 4 years of development, a new risk theory-based Road Restraint Standard, TD 19/06, was published, addressing the following: risk analysis in the design and assessment process; making risk assessments that are implicit within standards more transparent; providing computer software to enable a risk assessment process to be carried out following recommended design practices to ensure consistency in design appraisal; enabling designers to carry out site-specific risk assessments within the design process in order to select appropriate design parameters for all types of works; and providing a framework to support designers in making optimal design choices at specific sites. This paper discusses the current U.K. Standard TD 19, which comprises two parts that must be used together: the written Standard TD 19 Requirement for Road Restraint Systems and the Road Restraint Risk Assessment Process (RRRAP), an MS Excel spreadsheet that enables a designer to establish the need for a vehicle restraint and its basic performance requirements for each site or scheme.

01476927

English

pp 38-48

2013-2

Transportation Research Circular

Roadside Safety Design and Devices: International Workshop

Web

Figures; Tables

Barriers (Roads); Design practices; Design standards; Guardrails; Risk analysis; Roadside; Safety equipment

Roadside safety hardware

United Kingdom

Design; Highways; Safety and Human Factors; I20: Design and Planning of Transport Infrastructure; I85: Safety Devices used in Transport Infrastructure

TRIS, TRB, ATRI

Mar 19 2013 12:21PM

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