Laser Speed Detector Accuracy

Police laser gun overview.

Laser speed detector accuracy.

That being said laser guns are not infallible. Built to look and act like a hand held radar gun a laser detector uses a low powered beam of laser light that bounces off the targeted vehicle and returns to a receiver in the unit. This has the advantage of making it easier for the officer to tell which vehicle he is getting a. Unlike police radar guns which send a big blast of radar waves down the road that anyone running a radar detector can easily pick up on ahead of time police laser or lidar guns send a pinpoint beam of light that s specifically aimed at just one vehicle at a time.

Unlike police radar which directly determines a vehicle s speed by measuring its doppler speed induced frequency shift police lidar calculates speed by observing the changing amount of time is takes to see a series of reflected pulses of. With the introduction of the lti 20 20 truspeed laser speed gun in 2007 laser technology inc accomplished an engineering feat no other laser measurement manufacturer has done design a laser speed device that offered the accuracy and reliability that lti is known for yet be priced so even the smallest of departments could afford to use lidar light detection and ranging technology. Laser detectors are the most recent addition to the traffic officer s arsenal of speed measuring devices. Excessive cloud cover rain wind or fog can negatively impact a laser s reading.

Speeds measured by radar lidar and vascar devices are generally more accurate than an officer s visual estimation of speed. However speed measuring devices aren t infallible and a driver can make various challenges to their accuracy. Laser guns can be very accurate some models boast an accuracy of within one mile per hour up to 60 miles per hour and an accuracy of within three percent for speeds over 60 miles per hour.