Traffic light pad on Coleridge Road, Crouch End
Introduction
The photograph on this page of Traffic light pad on Coleridge Road, Crouch End by David Howard as part of the Geograph project.
The Geograph project started in 2005 with the aim of publishing, organising and preserving representative images for every square kilometre of Great Britain, Ireland and the Isle of Man.
There are currently over 7.5m images from over 14,400 individuals and you can help contribute to the project by visiting https://www.geograph.org.uk

Image: © David Howard Taken: 13 Mar 2015
I haven't seen one of these for ages but someone found it on another site. They were used to detect cars approaching the traffic lights before they used radar, and this is no longer in use as the road is now one way so cannot approach Crouch End Broadway in that direction and there are no lights there either as the traffic only enters the road now.