Speed cushion, speed table, and partially raised road surface at a junction
Speed cushions are raised sections of road with clearly-defined rectangular geometric shapes. They are designed to reduce speed and impose constraints on light vehicles while having a lesser effect on public transport vehicles and heavy goods vehicles. Motorised 2-wheel vehicles and bicycles can avoid speed cushions by going around them on the right. A technical guide on speed cushions was published in November 2000, entitled: "Guide des coussins et plateaux" (Guide to speed cushions and tables). In practice, gaps have been revealed in the recommendations, and so the guide is due to be updated in 2009.
A speed table is a raised section of road measuring around 10m to 30m in length with well-defined geometric characteristics, and which extends across the entire breadth of the road, from one pavement to the other. This is a speed calming measure that is less restrictive than a speed bump and is suitable for use on roads that carry heavy traffic, including public transport and heavy goods vehicles. It imposes the same constraints on all types of user. A technical guide to speed tables was published in November 2000, entitled Guide des coussins et plateaux (Guide to speed cushions and tables). In practice, gaps have been revealed in the recommendations, and so the guide is due to be updated in 2009.
A partially raised road surface at a junction is a device used in reduced-speed zones, at the centre of low-volume intersections. This feature may be square or rectangular, and of variable dimensions, depending on the size and configuration of the road junction. This device will be included in the new guide to speed tables and cushions, which will also describe its implementation.






