14-09-17, 09:33 AM
A single strip would not allow the monitor to work out the direction of travel. Having two they know that something went from left to right, or right to left. This is to work out traffic volumes
They theoretically could calculate the speed by timing the gap between hitting the first strip and the second. However, they cannot actually calculate speed as the strips run the whole width of the road so could be being hit by vehicles travelling in the other lane at the same time.
The strips are close enough together to ensure that one vehicle axle will hit the second strip before a second axle (or vehicle) hits the first one.
Its all a rough science to establish the number of axles travelling in each direction so they can work out what needs to be done for traffic calming, roadwork's etc etc.
They theoretically could calculate the speed by timing the gap between hitting the first strip and the second. However, they cannot actually calculate speed as the strips run the whole width of the road so could be being hit by vehicles travelling in the other lane at the same time.
The strips are close enough together to ensure that one vehicle axle will hit the second strip before a second axle (or vehicle) hits the first one.
Its all a rough science to establish the number of axles travelling in each direction so they can work out what needs to be done for traffic calming, roadwork's etc etc.
Another ex-Fazer rider that is a foccer again