Radar Speed Signs

Speed radar sign

Speed radar signs provide feedback that prompts motorists to slow down.

Radar speed signs are an effective way to get drivers to slow down. Radar speed signs calm traffic without the negatives associated with speed humps.

The signs display vehicle speed as motorists approach them. On most, the signs light up only when drivers exceed speed limits. The higher the travel speed, the faster the lights flash. The feedback makes drivers aware of their speed. The result: speeders slow down.

Radar speed limit signs are easy to install and inexpensive to operate. Many run on solar power, eliminating the need for wires. Some models are portable, making them easy to move to different locations


Radar speed limit signs prompt 35 to 70% of all speeding drivers to slow down. Tests show they are especially effective where motorists were exceeding the speed limit by 10 mph or more.

Who sells these?

PEDS endorses radar speed¬† sign technology, not a specific company. Google “radar speed sign” to find vendors.

How to get yours?

Find out your city’s or county’s policy.¬† Some municipalities allow the signs, but require residents or neighborhood associations to pay for them. Elsewhere, the city installs radar speed limit signs only in school zones or other restricted areas

Call your city or county public works department and ask how you can get a radar speed limit sign installed.