How do I choose between a SPEEDCHECK-12, SPEEDCHECK-15, or SPEEDCHECK-18 radar speed sign?

This article discusses the differences between the three sizes of SpeedCheck radar speed signs - 12", 15", and 18".

Product applicability

The following products are discussed in this article:


Carmanah has three different sizes of systems based on LED digit height. Please refer to the information below for a comparison between them:

LED digit size 12" 15" 18"
Speed limit Under 45 mph Under 45 mph 45 mph and over
Legibility distance* 360 ft 450 ft 540 ft
LED color Yellow Yellow, red or white Yellow, red or white
Optional SLOW DOWN message No Yes Yes
Beacon add-ons No Optional flashing beacons Optional flashing beacons
Strobe White strobe included Optional white or red/blue No
Power options Solar, AC, Battery-only Solar, AC Solar, AC
Setup software PC software or Mobile app PC software or Mobile App¹ PC software or Mobile App¹
Remote connectivity Applied Information Applied Information or Ethernet Applied Information or Ethernet

¹Only systems with the updated controller which shipped starting 2023. Contact Carmanah for more details.

*Legibility distance = a minimum specific ratio of 1 inch of letter height per 30 feet (per MUTCD Section 2A.13.02).

For individual data sheets for each product visit our article here.

Did this answer your question? Thanks for the feedback There was a problem submitting your feedback. Please try again later.