December 4, 2012
You may drive past one of these units, like the one in the left of photograph, and not know why it’s there. It is a portable device used by MoDOT to count traffic. It can keep track of up to eight lanes simultaneously and is moved every few days.
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Did you see one of those small, orange trailers with a tall pole that sports a big, white contraption at the top, parked along a Mid-Missouri highway? They’re used to count the number of vehicles that pass by them — usually for a 48-hour period — then are moved to count vehicles at another spot.