Evaluation of speed limiting locally operating warning signs.

Author(s)
Mabbott, N. Lloyd, B. Poole, D. & Roberts, P.
Year
Abstract

This study investigated the efficacy of Speed Limiting Locally Operating Warning Signs (SLLOWS) at a number of sites in the Perth metropolitan area. It was found that SLLOWS were successful in reducing vehicle speed at all locations (3 – 4 km/h on average), although the magnitude of the effect varied across locations. While there was generally a residual (halo) effect after the signs were removed, the magnitude of this effect was small (of the order of 1 km/h). It was also found that the effectiveness of SLLOWS was quite local; speeds reverted to pre-SLLOWS levels by 460 metres downstream of the sign. Finally, there was evidence that deployment of SLLOWS across successive days of the week resulted in a gradual decrease in efficacy (habituation effect). It was concluded that SLLOWS are most useful when they are employed as temporary and local speed moderating too (Author/publisher)

Request publication

1 + 2 =
Solve this simple math problem and enter the result. E.g. for 1+3, enter 4.

Publication

Library number
C 34692 [electronic version only] /73 / ITRD E213631
Source

Sydney, NSW, AUSTROADS, 2005, III + 27 p., 15 ref.; AP-R278/05 - ISBN 1-921139-09-9

Our collection

This publication is one of our other publications, and part of our extensive collection of road safety literature, that also includes the SWOV publications.