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:
“There exist certain individuals who are, by nature, given purely to contemplation and are utterly unsuited to action, and who, nevertheless, under a mysterious and unknown impulse, sometimes act with a speed which they themselves would have thought beyond them.”
—Charles Baudelaire (1821–1867)
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