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A wheel speed sensor (WSS) or vehicle speed sensor (VSS) is a type of tachometer. It is a sender device used for reading the speed of a vehicle's wheel rotation . It usually consists of a toothed ring and pickup.
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; Ground speed radar; Doppler radar; ANPR (where vehicles are timed over a fixed distance)
One speed monitoring technology which is undergoing testing in the US and Europe is called intelligent speed adaptation, which would assess the speed of the vehicle, and with the permission from the driver, automatically slow the vehicle down to the proper legal speed. If implemented, though, drivers would be able to override this system or ...
Standard radar speed sign with block letters. Pictured with solar panel.. A radar speed sign or speed feedback sign is an interactive sign comprising a speed-measuring device (e.g. a loop detector or radar) and a message sign generally constructed of a series of LEDs, which displays vehicle speed of approaching motorists. [1]
Above 30 km/h (19 mph), the vehicle will reduce its speed automatically. [47] It also allows the vehicle to engage braking assist, if there is a risk of a frontal collision and the driver suddenly applies the brakes. [47] The speed difference to allow an automatic stop was raised to 50 km/h (31 mph) in 2013 with improved cameras. [49]
The driver must manually bring the vehicle up to speed and use a button to set the cruise control to the current speed. The cruise control takes its speed signal from a rotating driveshaft, speedometer cable, wheel speed sensor from the engine's RPM, or internal speed pulses produced electronically by the vehicle. Most systems do not allow the ...
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