Some police departments use a technology called LIDAR. LIDAR stands for Light Detection And Ranging. The technology traps speeders through a laser device. Although, as a driver, this device is difficult to avoid, laser diffusers claim to confuse the LIDAR system by causing interference so the LIDAR can't pick up the driver's speed. These laser diffusers first alert the driver to police detectors such as LIDAR and then interfere with the device.
In California, the law states that "No vehicle shall be equipped with any device that is designed for, or is capable of, jamming, scrambling, neutralizing, disabling or otherwise interfering with radar, laser or any other electronic device used by a law enforcement agency to measure the speed of moving objects," according to Guysoflidar.com. Even without state laws, drivers using laser diffusers can be charged with a federal offense because the act can be considered a violation of FCC regulation, says laserveil.com.
Often, laser diffuser products to not live up to their advertisements and fail to work properly. Likewise, advanced police systems have the technology to alert officers when someone is using an interfering device, which could cause much more legal trouble for a driver than a speeding ticket.
