Pair of speed bumps

Image: © Bob Harvey Taken: 24 May 2020

There are 16 speed bump locations along Beech Avenue. Only Image is a chicane. (unlike Mill Drove which has an alternating pair of them). All the others are double speed bumps like these. The actual bumps were supplied pre-made and the road surface cut back with a diamond saw so they could be lowered in. they are not unlike an iceberg: there is more of them below the surface than we can see. They are a commercially available system, designed so that ambulances can pass over them with the minimum of a bump, but few domestic vehicles and no delivery lorries can match the track width to do that. part of the installation procedure is to set them a certain distance apart, and most of them have the sort of false kerb seen here on one side to make a standard road width. I have no idea why. The false kerb incorporates a tiny culvert so water drainage is relatively undisturbed. The false kerbs vanish in fallen snow, and there have been a few damaged alloy wheels as a consequence.

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