How accurate is the speed displayed by an EVOLIS Radar Speed Sign?

The accuracy of the speed displayed on a radar speed sign depends on two main factors: the Doppler antenna itself and the rate at which the speed is refreshed on the display.

The Evolis Radar Speed Sign uses a superior Doppler radar to achieve an accuracy level of 99%. The reliability of the reading is key for a strong traffic calming effect as motorists know they can trust the speed displayed. The accuracy is also essential for generating traffic data reports.

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