Traffic counter
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A traffic counter is a device, often electronic in nature, used to count, classify, and/or, measure the speed of vehicular traffic passing along a given roadway. The device is usually deployed in near proximity to the roadway and uses an intrusive medium, such as pneumatic road tubes laid across the roadway, piezo-electric sensors embedded in the roadway, inductive loops cut into the roadway, or a combination of these to detect the passing vehicles. 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.
[edit] See also
[edit] References
- ^ Field Test of Monitoring of Urban Vehicle Operations Using Non-Intrusive Technologies (HTML). Federal Highway Administration (May 1997). Retrieved on 2006-06-20.
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