Probable Cause Speeding Stop
With the advancement of technology, more police departments are using technology to their advantage concerning probable cause traffic stops (Tate) in relationship to speed measuring devices such as radar, laser/lidar, pacing, gap timing and traffic control devices (stop signs, traffic lights and pavement markings).
In essence, the police officer uses traffic violations (tickets) as an excuse to make a traffic stop and comply with the fourth amendment of the Constitutional; probable cause traffic stop and/or reasonable suspicion.
In order for the best possible defense against a probable cause traffic ticket (Tate), retain the correct expert / expert witness. That expert witness should have qualifications such as being an engineer that is certified instructor / operator in speed measuring devices as well as being efficient in traffic control devices.