View Full Version : Two cables running parallel across the road from speed cameras


PENGUIN
22-08-2004, 13:17
I seen them next to every speed camera I have passed, does anyone know what they are for ? They seem to connect to a little black box chained up to the camera post.

tango1
22-08-2004, 13:39
The 2 cables are pressure sensors, which are triggered when vehicles roll over them. They count the number of cars to collect traffic flow information. They are NOT speed detectors.

Speed detection equipment looks the same, but is usually (not always) connected to something more than an unattended box (like a computer / camera in the back of a van/police car).
Also, speed detection equipemtn of this type has 3 cables, not 2.

If the cables are next to speed cameras, they are possibly induction loops used to calculate your speed, although these are usually burried into the road, not sitting on top of it, and again, there shouldbe 3, not 2.

There is a lot of usefull information at

http://www.ukspeedtraps.co.uk/

Which may help you to identify the particular device you have spotted.

HTH,
tango1

kirky
22-08-2004, 13:41
Originally posted by tango1
The 2 cables are pressure sensors, which are triggered when vehicles roll over them. They count the number of cars to collect traffic flow information. They are NOT speed detectors.

Speed detection equipment looks the same, but is usually (not always) connected to something more than an unattended box (like a computer / camera in the back of a van/police car).
Also, speed detection equipemtn of this type has 3 cables, not 2.

If the cables are next to speed cameras, they are possibly induction loops used to calculate your speed, although these are usually burried into the road, not sitting on top of it, and again, there shouldbe 3, not 2.

There is a lot of usefull information at

http://www.ukspeedtraps.co.uk/

Which may help you to identify the particular device you have spotted.

HTH,
tango1

cheers for the info officer:D

tango1
22-08-2004, 13:55
Originally posted by kirky
cheers for the info officer:D

LOL - not quite...I have an interest in speed cameras, but for all the wrong reasons you might say... (check my sig for more details)

kirky
22-08-2004, 14:03
ah..your a joy rider:D

tango1
22-08-2004, 14:21
Originally posted by kirky
ah..your a joy rider:D

Well, sort of...but only in my own car...and I don't steal my alloys then set fire to it when I get home!

:)

Squiggs
22-08-2004, 21:20
Originally posted by PENGUIN
I seen them next to every speed camera I have passed, does anyone know what they are for ? They seem to connect to a little black box chained up to the camera post.

I noticed this too. On very speed camera I pass. They seem to be evaluating traffic flow past the speed cameras. Maybe they're re-thinking sites

LoopyLou
23-08-2004, 12:10
So..... if we avoid the areas where they are currently, they will move the cameras somewhere else, which means we can go back to the original roads and not get caught....


iv'e been drinking - sorry!