Traffic counter

From Wikipedia, the free encyclopedia

A traffic counter is a device, often electromechanical in nature, used to count, classify, and/or, measure the speed of vehicles passing across a given roadway. The device often is deployed in near proximity to the roadway and uses an intrusive medium, such as pneumatic tubes laid across the roadway, piezo-electric sensors buried into the roadway, inductive loops cut into the roadway, or a combination of these to detect vehicles passing. Recently, in the interest of worker safety and ease of installation, non-intrusive technologies have been developed^[1]. These devices generally use some sort of transmitted energy such as radar waves or infrared beams to detect vehicles passing over the roadway.

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