How Do Speed Camera Vans Work?

Answer

Speed cameras detect vehicles going beyond the speed limits. The cameras take a picture of the vehicle's license plates and send to law enforcement. They are operated from vans or mounted on a tripod outside the vehicle. Multiple cameras may be used to ensure accurate coverage. They monitor both directions of traffic and take pictures of the front and back of the offending vehicles. The cameras are activated once a vehicle crosses the laser beam and it takes two pictures, half a second apart.
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Ask.com Answer for: how do speed camera vans work
How Do Mobile Speed Camera Vans Work?
Speed cameras detect vehicles going over the speed limit. The cameras then take a picture of the vehicles' license plates and send the images to local law enforcement. The cameras can be in a fixed position or equipped in mobile units, typically vans.... More »
Difficulty: Easy
Source: www.ehow.com
Speed camera vans work when the laser is aimed at a number plate and the returned signal bounces back to the gun to determine the speed. These mobile laser systems are mostly found in vans, which can target vehicles from short or long range and they normally have some sort of video equipment attached to record the evidence.
Mobile laser systems are often found in vans, which can target vehicles from short or long range. The laser is aimed at the number plate and the returned signal bounces back to the gun to determine the speed. Evidence of which number plate was targeted is recorded on the video, or may be noted by the operator. Laser is a very accurate system, with a speed acquisition time as little as 0.3 seconds. T his is the reason laser guns are being used rather than the old-fashioned radar guns, which found it hard to determine which car was the target. There are various types of laser equipment in use, but all currently use the same 904nM light beam
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