Traffic calming techniques: Experience and practical advice with 80 case studies

  • Published: The Institution of Highways and Transportation and the County Surveyors’ Society, 2005
  • Authors: The Institution of Highways and Transportation and the County Surveyors’ Society
  • Date Added: 07 Feb 2013
  • Last Update: 12 Feb 2016
  • Format: pdf

Objectives:

To provide an update ten years after the publication of the County Surveyors’ Society’s publication entitled Traffic Calming in Practice. The report updates the work started in TCiP and extends it to demonstrate how traffic calming techniques have changed. The objectives of the report are to describe the context within which traffic calming measures should be considered and provide guidance on design and implementation and how traffic calming techniques may develop in the future.

Methodology:

The report has been developed through a review of:

  • Design and implementation of traffic calming measures
  • Public consultation and participation processesRelevant legislation, standards, guidance and advice,
  • National policy background, design procedures and quality
  • Case studies looking at a longer term view of some of the schemes introduced in the past

Key Findings:

  • Traffic calming features generally need supporting by traffic signs. Signing and lighting are subject to the requirements of the regulations and advice, which aim to ensure that traffic calming features are clearly visible to approaching drivers at all times.

  • As well as using signing, markings and lighting to meet the requirements of regulations, they can also be used to provide information to ensure appropriate warning of traffic calming features is given to approaching drivers at all times. Traffic calming measures need to be visible both day and night and in adverse weather conditions.

  • Traffic calming schemes, particularly when introduced in rural situations where the aim is to reduce speeds to 40, or perhaps 30 mph, sometimes result in a significant increase in the number of warning signs in advance of the traffic calmed area. Along with carriageway markings and other features, they are used to alter the drivers' perception of the road on which they are travelling and hence bring about a change in behaviour leading to slower speeds.

  • White lining can have a very significant part to play in many traffic calming schemes and can in itself bring about significant benefits, although these are likely to be greatest when used in combination with other techniques.

  • Vehicle activated sign devices are particularly useful on the approaches to bends and junctions where motorists may be unable to judge a safe speed until they are in the bend, or are unaware of side road visibility restrictions.

Themes:

Signs and markings, safety, RTIs, legislation, policies and standards

Comments:

Robust document. However, it is slightly dated (7 years old) and signs and markings only form part of the analysis.

Free (subject to subscription to IHS)