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If you are like most people, you probably rely on your car every day to get to school, work, the grocery store and back home. While a speeding ticket may not seem like a serious offense, it can have a big impact on the car insurance rates you receive, and it could result in you losing your license if the citation is paired with other driving offenses.

Many speeding ticket cases rely on evidence from radar guns. Radar guns send radio waves or lasers toward a vehicle and measure the rate those waves or lasers bounce back. They calculate the speed of a vehicle based on the changes in the return signal. If you have been cited for speeding, you may have wondered if the radar gun used to provide the evidence of your alleged speeding is even reliable.

Radar guns have their limits, the way all technology does. While it is possible to challenge the radar gun evidence in court, it is important to understand that it will be a difficult case to win. Two common ways to challenge radar gun evidence include questioning the reliability of the radar gun and the officer who used it.


Radar guns require regular calibration to ensure they are providing accurate readings. You or your attorney could request a calibration record to verify that the radar gun was correctly calibrated at the time of your alleged traffic violation. If the officer does not provide a record for calibrating the radar gun, your attorney may argue that it could not reliably record your speed, and the judge may throw out your case.

User error

Officers must be trained on how to properly use and calibrate radar guns. You or your attorney can check to see if the officer has completed this training. If he or she has not, your attorney may be able to challenge the radar reading by arguing that it was inaccurate due to an error made by the inadequately trained officer.

Despite the common misconception, speeding tickets can have a serious impact on your life. Depending on the circumstances surrounding your alleged violation, you may benefit from challenging it in court.

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Hale Law Firm, PC
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