Speed tables (also known as junction tables when placed at a junction) take the form of a raised section that spans the road. They achieve significant reduction in speed and make it easier and safer for pedestrians to cross the road on the top of the table where speeds are at their lowest.
Speed tables may create noise and vibration which could impact local residents and may cause traffic to divert to other routes, in particular where a route is regularly used by larger vehicles and/or trailers and therefore consideration would be given to their location. Drainage impacts would also need to be considered in the design of a speed table.
Traffic calming techniques work best when they are installed as a series of tables along a length of a road rather than at one single point.
The cost of speed tables can vary dramatically as certain factors will need to be considered in their design. In some instances, adjustments may be required to certain drainage facilities and surrounding footways which may have an impact on the cost (from approximately £10,000 to £50,000 where a table covers a whole junction).
All costs stated are for guidance only.
Figures provided are estimates and are reviewed annually, with all costs subject to a site survey assessment.
For further guidance see the Department for Transport: Local Transport Note on Traffic calming