Laser guns now approach 25% of all sales of radar and laser guns. Many cities turned off radar guns in favor of laser. Laser can pinpoint one vehicle in a group of rush hour traffic. Radar can’t. Radar detectors have difficulty giving advanced warning to laser’s use. A new, easy-to-use laser gun, from Laser Technologies Inc., (LTI) TruCam®, takes pictures stored in a SD media card aboard the gun with each trigger pull for evidence of speeding. We placed a cone at 1,000 feet. A Pro Laser III laser was first aimed at the windshield and then at the license plate. Each detector had two tries. Officers are trained to aim at the front license plate or where it should be. Court precedent dictates laser should not be used past 1,000 feet. Many use it at greater distances. At 1,000 feet, laser’s 3 milliradian, 904 nanometer, beam is 36” wide. A Ka band radar gun’s beam is 158 feet wide! Laser guns report the speed in mph and distance in feet.New laser guns allow officers to continually track after locking an offending vehicle. Now, laser guns can operate in the rain, snow, and through the windshield set to the “inc” mode which means inclement weather mode. Our laser guns in this test were set to the normal operating mode. Y means the detector detected laser. N means the detector did not detect laser. Due to the critical nature of holding the laser gun steady, repetitions were allowed. Serial numbers noted on the RDD page apply to all testing. The Cobra retail box claims to identify laser guns by model and make of the specific laser gun. In the case of the Cobra detectors XRS 9960G and XRS R10G, we used nine (9) laser guns including: Kustom Pro Laser II, Kustom Pro Laser III, Kustom ProLite+, Kustom ProLite, LTI TruSpeed, LTI 20/20, LTI Ultralyte LR, Laser Atlanta SpeedLaser, and Stalker LZ-1. Both Cobra models correctly identified laser guns by their assigned pulse rate. Laser guns transmit pulses of infrared light at different pulse rates per second, pps, or PRF, pulse repetition frequency. Kustom ProLaser III, ProLite, and ProLite+ transmit at 200 pps and the Laser Atlanta SpeedLaser/Kustom ProLaser II at 238 pps. Stalker is 130 pps. The Cobra detectors identified these pulse rates accurately. On 11 July, we evaluated three Whistler radar detectors. These detectors claim a feature called Laser ID, LSR, which is different from Cobra. The Whistler feature doesn’t identify models of laser guns, but displays the pulse rate of the laser used. We found all three models, i.e. XTR69SE, Pro78SE, and XTR690SE to correctly report the pulse rates of all nine (9) laser guns. Further, we had four (4) laser testers, all at different pulse rates. Here again, all three Whistler models correctly identified the pulse rates of all four testers. Regardless of the detector, expect little advanced warning to laser’s use. The laser IR light beam is very narrow and does not scatter compared to microwave radar. SML’s E.E. Engineer Dave Adams, measured laser IR dimensions, displayed laser emissions, and confirmed the pulse rates of the laser guns with an IR camera. Participants observed.

Laser guns now approach 25% of all sales of radar and laser guns. Many cities turned off radar guns in favor of laser. Laser can pinpoint one vehicle in a group of rush hour traffic. Radar can’t. Radar detectors have difficulty giving advanced warning to laser’s use. A new, easy-to-use laser gun, from Laser Technologies Inc., (LTI) TruCam®, takes pictures stored in a SD media card aboard the gun with each trigger pull for evidence of speeding.

We placed a cone at 1,000 feet. A Pro Laser III laser was first aimed at the windshield and then at the license plate. Each detector had two tries. Officers are trained to aim at the front license plate or where it should be. Court precedent dictates laser should not be used past 1,000 feet. Many use it at greater distances. At 1,000 feet, laser’s 3 milliradian, 904 nanometer, beam is 36” wide.

A Ka band radar gun’s beam is 158 feet wide! Laser guns report the speed in mph and distance in feet.New laser guns allow officers to continually track after locking an offending vehicle. Now, laser guns can operate in the rain, snow, and through the windshield set to the “inc” mode which means inclement weather mode. Our laser guns in this test were set to the normal operating mode. Y means the detector detected laser. N means the detector did not detect laser. Due to the critical nature of holding the laser gun steady, repetitions were allowed. Serial numbers noted on the RDD page apply to all testing.

The Cobra retail box claims to identify laser guns by model and make of the specific laser gun. In the case of the Cobra detectors XRS 9960G and XRS R10G, we used nine (9) laser guns including: Kustom Pro Laser II, Kustom Pro Laser III, Kustom ProLite+, Kustom ProLite, LTI TruSpeed, LTI 20/20, LTI Ultralyte LR, Laser Atlanta SpeedLaser, and Stalker LZ-1. Both Cobra models correctly identified laser guns by their assigned pulse rate. Laser guns transmit pulses of infrared light at different pulse rates per second, pps, or PRF, pulse repetition frequency. Kustom ProLaser III, ProLite, and ProLite+ transmit at 200 pps and the Laser Atlanta SpeedLaser/Kustom ProLaser II at 238 pps. Stalker is 130 pps. The Cobra detectors identified these pulse rates accurately. On 11 July, we evaluated three Whistler radar detectors. These detectors claim a feature called Laser ID, LSR, which is different from Cobra. The Whistler feature doesn’t identify models of laser guns, but displays the pulse rate of the laser used. We found all three models, i.e. XTR69SE, Pro78SE, and XTR690SE to correctly report the pulse rates of all nine (9) laser guns. Further, we had four (4) laser testers, all at different pulse rates. Here again, all three Whistler models correctly identified the pulse rates of all four testers. Regardless of the detector, expect little advanced warning to laser’s use. The laser IR light beam is very narrow and does not scatter compared to microwave radar.

SML’s E.E. Engineer Dave Adams, measured laser IR dimensions, displayed laser emissions, and confirmed the pulse rates of the laser guns with an IR camera. Participants observed.