GPS Personal Tracking Systems

Radar Guns vs GPS


How To Prove You Weren’t Speeding

At some time or another almost every driver has felt the unpleasant feeling of receiving a speeding ticket from a police officer or highway patrol officer. There are many times that the ticketed person’s speedometer did not reflect that they were indeed speeding at the time they received the ticket. Unfortunately, it does not matter because the law always prevails for the officer and his or her radar gun that recorded the speed that was supposedly driven. However, technology has changed with the recent popularity and technological advancement of GPS tracking systems that are now inexpensive and easy to use. GPS tracking systems have paved the way for people who feel they were wrongly ticketed by an officer to validate themselves and fight the semi-reliable radar technology that officers use.

Radar and laser guns used to calculate a motorist’s speed are not 100% reliable, and their flaws are becoming more exposed. There is a vast amount of credible online information showing that a good percentage of given traffic tickets were actually due to a reading of an inaccurate radar gun.

GPS tracking systems are one tool that many people have been using to fight the growing problem of officers giving out traffic tickets because of a false reading recorded by a radar or laser gun.

Some of the reasons for radar gun errors include:

  • Radio Frequency Interference (RFI)
  • Mechanical Interference
  • Cosine Error
  • Other outside conditions, variables, settings can influence the reading taken by a radar or laser gun

Radar Guns and GPS: How They Track Speed

Radar guns record speed by sending out a narrow radio signal at a pre-set frequency. This radio signal then targets a moving automobile, reflecting the signal back to the radar gun. Due to the velocity of the vehicle, the frequency of this reflected signal will vary from when it was transmitted. The speed of the object is proportional to the difference in frequency (the Doppler effect).

GPS Trackers Record Speed Every Second

The easiest way to figure out speed is to calculate the change in the position of a vehicle over time. However, GPS tracking devices have a better way to measure vehicle speed – they measure velocity the exact same fashion radar guns do by using the Doppler effect. This is why positional accuracy has no bearing on velocity readings.

GPS tracking and vehicle tracking technology has been widely accessible by consumers since the passing of the Selective Availability Act approximately 10 years ago. Now, with the advances in the GPS tracking industry, tracking systems are affordable and designed specifically for a consumer retail market.

GPS vehicle trackers use satellite technology to accurately triangulate a person or vehicle’s speed, position, date, time en route, time departed, etc. Of all the various ways to collect this sensitive data, vehicle tracking systems that utilize GPS technology are widely viewed as the most accurate way to gather the driving-related, or travel information.