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Title:

Safe Speeds and Credible Speed Limits (SaCredSpeed): New Vision for Decision Making on Speed Management

Accession Number:

01123270

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

Speed is an inherent characteristic of mobility and a hazard to safety. Several approaches exist of how to manage speed. In the Netherlands, the emphasis has mainly been on harm minimisation during the last decades, due to the implementation of the Sustainable Safety vision. Speed management remains a core business in this vision, by means of an integral approach of speed management measurements. A request from a number of regional authorities to assist them in developing a decision support system for speed management was the starting point for elaborating SWOV's vision on safe speed and credible speed limits (SaCredSpeed) into an algorithm. This vision and algorithm are presented in this paper. The SaCredSpeed algorithm uses input data of design, image and traffic characteristics of a particular stretch of road to asses a safe speed and speed limit for that particular situation. This safe speed is related to the real speed (V90; optional), and, depending on the fit, the credibility of the speed limit, the enforcement situation (optional), the network function of the road, the condition of the adjacent roads, and the priorities the decision maker wants to set, SaCredSpeed offers suggestions for adaptations. These can consist of a) speed limit adaptations, b) road design adaptations or c) additional enforcement adaptations. This integral approach to speed management from the view of safety and credibility can be a good addition to other speed or safety instruments that exist. The paper concludes with suggestions for further research and international cooperation.

Monograph Accession #:

01120148

Report/Paper Numbers:

09-1259

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Aarts, Letty
van Nes, Nicole
Wegman, Fred C. M.
van Schagen, Ingrid
Louwerse, Robert

Pagination:

15p

Publication Date:

2009

Conference:

Transportation Research Board 88th Annual Meeting

Location: Washington DC, United States
Date: 2009-1-11 to 2009-1-15
Sponsors: Transportation Research Board

Media Type:

DVD

Features:

Figures (2) ; References (35) ; Tables (1)

Geographic Terms:

Netherlands

Subject Areas:

Highways; Safety and Human Factors; I83: Accidents and the Human Factor; I85: Safety Devices used in Transport Infrastructure

Source Data:

Transportation Research Board Annual Meeting 2009 Paper #09-1259

Files:

TRIS, TRB

Created Date:

Jan 30 2009 5:28PM