Speed sensors are machines used to detect the speed of an object, usually a transport vehicle. They include:
- Wheel speed sensors
- Speedometers
- Pitometer logs
- Pitot tubes
- Airspeed indicators
- Piezo sensors (e.g. in a road surface)
- LIDAR
- Doppler radar
- ANPR (where vehicles are timed over a fixed distance)
- Laser surface velocimeters for moving surfaces
Famous quotes containing the word speed:
“Among the laws controlling human societies there is one more precise and clearer, it seems to me, than all the others. If men are to remain civilized or to become civilized, the art of association must develop and improve among them at the same speed as equality of conditions spreads.”
—Alexis de Tocqueville (1805–1859)
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