Yellow Cameras on A40(M)

[Myriad2112]

Does anyone know if the avarage speed cameras around the Uxbridge area of the A40 actually work?
I've been though it at about 50 and haven't received a ticket and also how could they work in the dark?

[Ethel]

Speed cameras do indeed work in dark - they have flash that illuminates the registration plate.

If the camera uses film there may not have been in a film in at the time - if it is a more modern one, they may not have been able to process the paperwork within the legal time limits.

[kempie]

SPECS cameras neither flash nor use film.

They have infra-red illuminators and digitally record all vehicles, speeding or not.

http://www.speedcamerasuk.com/SPECS.htm

[bednobs]

with the average speed cameras it dosent matter too much how fast you go through them, because they take an average speed, so they clock you going in, and clock you at the next point and take an average. Therefore if you went through the forst one at 80mph, as long as you went sufficiently slow to make it an average of 50 before the 2nd one it's ok

[sense4all]

Fraid they do. Have you noticed the extra/ new camera that's appeared in the last week a junction or two further in towards London - so sneaky!!

[Myriad2112]

I usually hide alongside a coach or a high lorry when going past the first one so they have nothing to take an average with. I did wonder if they worked in the dark though. Thanks.