Police rear facing radar systems are designed to detect the speed of vehicles approaching from behind a police patrol vehicle, which could be a car, suv or pickup truck. These radar systems, could be a two piece unit. The antenna can be mounted on the rear window, integrated into the light bar of a police vehicle / cruiser or the rear side door window. They are especially effective for monitoring traffic when the officer is either moving and/or stationary mode.

Functionality of Rear Police Radar:

Doppler Radar Technology: Similar to front-facing radar, rear radar utilizes the same Doppler effect to measure a vehicle’s speed, which can vary from model to model(s).   

Same Direction Mode: 
Some radar models enable officers to track the speeds of vehicles traveling in the same direction. 

Stationary Radar Mode: 

When the police patrol vehicle is parked, rear radar continues to monitor vehicles approaching from behind. 

Dual Antenna Systems:

Many police radar units are equipped with both front and rear antennas, allowing officers to track vehicles from both directions simultaneously. 

Integration with Radar Video (MVARS): 

Certain radar systems are compatible with dash cameras, enabling the collection of visual evidence alongside speed data.

Roles of an Expert Witness in Speeding Ticket Cases:

An expert witness in the realm of police radar and speeding citations possesses specialized knowledge in speed measuring devices, such as radar technology, traffic enforcement, or related disciplines. Such individuals are frequently called upon in court cases to either challenge or affirm the validity of a speeding citation.

Analysis of Radar Data 

Inspection of Site

Examination of the radar device. 

Evaluation of Procedures 

Courtroom Explanation

Support for the Examination Process