Sorry Thomas - they seem to be set at 'hybrid' speed

Pretty sure they're not sensored, just timed to stop the drunken driving chav's running down the drunken ped chavs on Friday and Saturday night.
For those that don't know - that's Prince of Wales Road - where every property is alternately a club, bar or kebab shop. Whenever they show the 'Broken Britain' (tm*) binge-drinking-youth-of-today-sprawled-over-the-pavement-outside-provincial-nightclubs on TV - it always seems to be filmed there.
* copyright Noel (T**t) Edmunds ...