Two cables across the road: What are they?

jok · Scooby Slapper Joined: 06 Dec 2005 Karma :

In several places, I've seen two cables run across the road about 2 feet apart. On one side, they're just cut off so they're not power leads, on the other they disappear into the side of the road. I thought they might be speed camera triggers or similar, but the positioning of several of them doesn't make sense in that regard. Does anyone know what these are for? (Vehicle counters?)
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CG125 (stolen->recovered!) || Wars do not decide who's right, only who's left.

0ddball · World Chat Champion Joined: 15 Jul 2005 Karma :

Some are just for monitoring how much traffic uses the road. Some record rough speeds, probably as research for whether it is feasable location for a speed camera.

But i read somewhere that some can actually trigger a speed camera. I think it's the 3 strip ones you need to watch out for.

tomkapsalis · Trackday Trickster Joined: 06 Jun 2006 Karma :

If there are two rubber bits of tubing going accross the road and someone standing on the pavement with a clipboard looking official then there just checking the traffic flow. I think it's just done in busy areas. Nothing to worry about.
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Faster, faster, faster, until the thrill of speed overcomes the fear of death...

Dave1216 · Two Stroke Sniffer Joined: 28 Jun 2006 Karma :

Often you see them with a grey box chained to a lamppost at one end. I saw one on the entrance to a car park for some council controlled lakes.

I always assumed they were for counting purpose's only. I expect they need two to tell what direction your travelling in.

It it were for speed purposes - then i would think that the gap between the cables was too narrow to get an speed reading.
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Yamaha YBR-125

matt_uk · World Chat Champion Joined: 19 Jul 2006 Karma :

its just to gether information on the road, like how many cars travel down the road in 1 day etc
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G · The Voice of Reason Joined: 02 Feb 2002 Karma :

The gap between the two should be fine for speed, I would have thought.

Whatever, I try and go over them under the speed limit, so if it is measuring speed the average is lowered a bit.

ncrn · World Chat Champion Joined: 24 May 2006 Karma :

ive always wondered what youd do to the readings if you did a burnout on one of those?

carsounds_dan · Nitrous Nuisance Joined: 13 Jul 2006 Karma :

phantomtek · Lil Joe Tek Joined: 20 May 2005 Karma :

Seen as it doesn't measure speed from the amount of rotations the wheels take over the line (Seen as it can't) it wouldn't do alot.

I believe they measure how fast you are going by the time it takes for you to cross both of the lines, using Speed = Distance / Time as the way to record it.

NSR Mick · World Chat Champion Joined: 26 Jun 2005 Karma :

And then one of these comes along and cocks the whole thing up. Wink

https://www.liebherr.com/images/146-LTM_1400_1_300p_rdax_300x215.jpg
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