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juicy_wishun
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Yes, both.
They are used by various agencies to gather data on traffic patterns. It tells them how many cars use that stretch of road in a certain time period, and, by measuring the time difference between hitting each strip, how fast people tend to go on that road.
It is not unusual for the highway patrol to use them to figure out a good palce to put a speed trap. |
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Rick H
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I think those are the lines that make the little "Ding Ding" in the gas stations.
Hey Rowdy, I'd give you the best answer just for working in this phrase. " many a true word spoken in jest! "
joke people... relax |
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Jason
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Counting cars..................... |
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rowdy
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Rick H - many a true word spoken in jest! They work on exactly the same principle, and measure the amount of traffic using the road (to be exact, they measure the number of axles that cross it).
Counting the number of axles doesn't give them the number of vehicles, because of course not all vehicles have the same number of axles. So they use two "wires". Obviously, that gives a much higher figure, but that doesn't matter - doubling the figure gives a more accurate result for comparison with other roads, and better takes into account the "different number of axles on different vehicles" problem.
All they need to know is that "x" number of clicks on the machine means "y" amount of traffic. |
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steven e
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count traffic. |
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WHO am i?
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traffic counters. |
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M1
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count traffic |
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Dragon_Of_The_Claw
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two is a car counter.
three is a speed monitor. |
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butterfliesRfree
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Both -- they do count cars that travel the road. |
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harry
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count the number of cars using that road |
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gerard
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traffic management |
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cinderella
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i think they count traffic |
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♥♥The Queen Has Spoken♥♥
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It is traffic counting measure. Usually they do this to see how heavy the traffic is in certain areas |
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The Fat Controller
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they count the traffic passing over them |
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ladyni
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its a traffic survey |
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johnson88
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It counts the number of vehicles passing over them over a specific time period. This way county engineers can gauge the amount of traffic on that particular part of the road. It may lead to widening of the road, or the addition/modification of a traffic control device, like a red light, etc. |
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BlueBolt
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They are put there by the council, to check the average speed & how often the road is used by cars |
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Tom-SJ
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It's like the chicken joke - why did 2 black wires cross the road?
Because ... (your answer goes here.)
Actually, I think they are pneumatic traffic counters. The weight of a vehicle compresses the air inside the tube (not a wire), which increments a counter in a box.
Back in the old day, a single tube did the trick. I'm not sure why 2 are needed today - perhaps to increase the accuracy. |
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k
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Measure the speed along the road |
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what u talkin' bout?
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You are on the right track. I believe it is a traffic check. How many cars possibly travel the road. |
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bungee
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count traffic |
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Matt R
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They count traffic and measure speed of the cars as they pass. The data is usually used for upcoming construction projects to measure the impact on traffic. |
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UCANTCME
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TRAFFIC COUNTERS |
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NIGEL T
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They are used to count traffic travelling at a reasonable speed on that particular stretch of road. |
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Rick K
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They count the number of cars that pass. This is probably for the purpose of advertising fees. There are probably some billboards ahead, and if the owners of the billboards can demonstrate high traffic, then they can charge more for the advertising space, because more people will see the ad.
Make sense? |
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