Average Speed Cameras

[Whoever]

If you change lanes on a stretch of dual carriageway where an Average Speed Camera check is operating, does this invalidate the process?

[Gizmonster]

I wouldn't have thought so, otherwise everyone would play this game if they knew where and when these cameras were operating.
I'm fairly sure they operate by ANPR, so if there were 3 cameras covering 3 lanes, I would assume that they would all be linked to a central memory of some kind .... so you'd be goosed no matter what lane you were in :(

[RATTER15]

I doubt it or you would have people swerving around the lanes at high speed to defeat the camera.

[frugalfred]

Gizmonster is right. They work by recording registration numbers of vehicles.

[pauln90]

http://www.confused.com/news-views/blogs/blog-can-you-fool-a-speed-camera

[frugalfred]

Vehicle Reg No. GIZ 22 enters restricted zone at 10.22.30; recorded on computer; GIZ 22 leaves zone at 10.23.30; recorded on computer. Restricted zone is, say 1 mile in length; simple calculation: Speed = distance/time;
S = 1 mile/1 minute = 1 mile per minute = 60 mph. Fine on its way.

[SeaJayPea]

In the early days of these things, what Whoever suggests was in fact the case. Each lane was monitored by its own camera and cars were clocked as they entered the zone and left it, but only if they left it in the same lane that they had entered it. The authorities caught on pretty quickly, though. And now, as everybody says, the process is pretty near solid.