the two black cords on the road that are run over by all the cars and have a green box attached to the
2006-11-10 12:58:47 · 12 answers · asked by Lupe G 1 in Cars & Transportation ➔ Safety
Traffic counters. Governments use them to determine how much traffic is using a certain roadway. It's a tool in helping them determine how to best set up infrastructure and also funding and speed limits.
2006-11-10 13:01:18 · answer #1 · answered by Anonymous · 1⤊ 0⤋
They are data collectors for the Highway Traffic. Totals are used to help with designs in the roadway, regarding needs for traffic lights, enlarging roads to meet the demands of increased traffic. They act like the old bells at gas stations when there used to be full service stations,,,,only the box keeps track of the number of cars that pass over the "black cord" without the sound of the bell.
2006-11-10 13:32:13 · answer #2 · answered by Kelly 3 · 0⤊ 0⤋
They are used to count the traffic on that specific stretch of road and the reason for two cords is so that they can separately count Semi Trucks from the other traffic. It gives them a numerical reference to how much that road is used and by what types of vehicles.
2006-11-10 13:29:13 · answer #3 · answered by tvcarvcr2 2 · 0⤊ 0⤋
I think they are there to monitor the traffic flow to see if the road needs improvements. Sometimes they do this periodically on a road and sometimes they do this before approving a construction project - to make sure that the traffic needs are met.
2006-11-10 13:04:04 · answer #4 · answered by Bizzi mom 2 · 1⤊ 0⤋
The Department of Transportation of the State you live in, put them there to get a count of how many vehicles pass over that spot. They might have a means to divide by the number of wheels that pass over per number of seconds, I suppose. Other than that, I'm told that there are two to a set, and they measure how fast you go from the first cable to the second cable. Then they can calculate who's speeding.
I've heard this, but never verified it. So... I guess we have to verify this per Department of Motor Vehicles or D.O.T.
2006-11-10 13:05:35 · answer #5 · answered by Anonymous · 0⤊ 0⤋
They count cars, how many, what time of day, etc.. Used in planning road construction and traffic light controls and stuff like that.
2006-11-10 13:03:02 · answer #6 · answered by Mr. Right 4 · 0⤊ 0⤋
Trip wires for very clumsy cars...
Actually they are designed to prevent the passage of Yugos into a specific area as they aren't powerful enough to run the wires over.
2006-11-11 09:12:19 · answer #7 · answered by Reid H 2 · 0⤊ 0⤋
this is a way for the state to calculate the number of vehicle that travel down a certain road to see if they need to add any kind of traffic signs, signals, etc.....
2006-11-10 13:03:31 · answer #8 · answered by special 4 · 1⤊ 0⤋
Its a traffic survey.
They are trying to study busy patterns, slow periods, traffic light changes, etc...its all about urban planning.
2006-11-10 13:02:30 · answer #9 · answered by jasandalb 2 · 0⤊ 0⤋
to see how much traffic is on that road. It's a road servery
2006-11-10 13:01:55 · answer #10 · answered by Anonymous · 0⤊ 0⤋