Speeding by Radar / Paced Expert

Perry Zucker • April 14, 2025

Speeding Tickets by Radar and Pacing



Speeding Pacing Radar Traffic Stop -  Expert


Law enforcement officials are utilizing a variety of tactics, such as license plate scanners, identification of vehicle equipment violations, radar, and pacing, to initiate traffic stops that may lead to the issuance of a traffic ticket, citation, or violation, the establishment of probable cause, and a subsequent vehicle search. The included video footage depicts a police officer conducting two traffic stops of this nature. The final stop, involving a modified pick-up truck with improper equipment, was initiated based on observed speeding, determined through pacing techniques.


How does Police Radar Operate:

Doppler Radar Technology: The radar device transmits electromagnetic waves toward a target vehicle. Reflected waves undergo a frequency shift attributable to the Doppler effect, which is then processed to determine the target’s speed.


Police Radar Modes:

Radar Stationary Mode:

Certain radar units function in stationary configurations, while others are mounted on  patrol vehicles or handheld. The latter enable continuous speed assessment of both approaching and receding vehicles.

Radar Moving Mode:

The moving mode of the police radar is activated when the police vehicle is in motion, either approaching or receding from the target vehicle.


Strategies for Challenging Speeding Tickets Based on Radar:

Defending a radar-based speeding violation can involve expert technical analysis. Engaging a qualified specialist is among the most effective approaches to dispute such citations.


Role of Expert Testimony in Speeding Ticket By Radar Litigation:

A forensic expert with specialization in radar technology and traffic enforcement methodologies possesses in-depth understanding of measurement instrumentation, calibration standards, and procedural compliance. Such experts can provide sworn testimony to challenge or uphold the data of radar-derived speed measurements in judicial proceedings.


What is Police Pacing And How Does Pacing Work in Speed Enforcement?

Police pacing is a technique used by law enforcement officers to determine a vehicle’s speed. The officer follows the suspect’s vehicle at a consistent distance within their patrol car, matches their own vehicle’s speed to that of the suspect, and uses a speed measurement device, such as their speedometer, to estimate whether the vehicle exceeds the posted speed limit.


Pacing is generally considered an admissible method of establishing vehicle speed in most jurisdictions, provided the officer adheres to proper procedures and can attest to the circumstances. Its validity primarily depends on the officer’s testimony and supporting evidence.


Challenging a Pacing-Based Speeding Ticket

Defendants considering challenging a pacing-based ticket may benefit from consulting an expert, such as an engineer familiar with speed measuring techniques, laws, and procedures to assess the case and potentially provide expert testimony.



Relevant Services for Radar and Pacing  Speeding Dispute:

Technical Analysis of Data From Radar and Pacing

Site and Environment Inspection

Functional  of Radar / Pacing  Devices

Review of Enforcement Data

Expert Courtroom Testimony

Procedural and Technical Consultation