In order to combat the practice known as the “Brazilian way” adopted by some drivers to avoid detection of speeding by fixed radars, the cities of São Paulo and Curitiba resorted to technology in search of a solution effective.
The strategy used by offenders consists of momentarily reducing speed when approaching the radars and, as soon as they pass them, speeding up again beyond the permitted limit.
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To eliminate this maneuver, authorities decided to develop equipment based on a scientific principle known as the Doppler Effect.
So, if you are used to the method, know that it is about to lose its effectiveness.
How does the new radar work?
The Doppler Effect manifests itself in the form of a change in the perceived frequency of the sound, be it higher, when the sound source approaches the observer; or lower (redshift) as the source moves away.
This effect has applications in several areas, such as astronomy to determine the speed of stars and galaxies, in addition to being used in radar equipment, for example.
Unlike the radars conventional vehicles, which depend on sensors on the ground to measure vehicle speed, the technology under test uses the principle of the Doppler Effect to perform this measurement.
Rather than relying on fixed sensors, radar is able to detect the shift in frequency of sound emitted by moving vehicles.
The technology was developed with innovative features that allow measuring the speed of vehicles at a distance of up to 50 meters after passing through the installation point.
In addition, they were programmed to record images that show possible infractions, such as prohibited lane changes and disrespect to the Red sign.
São Paulo and Curitiba already make use of the new radar
The results of the new radars have been positive in the city of Curitiba and São Paulo, as mentioned by the Unit Coordinator of Monitoring by Electronic Devices of the Municipal Department of Social Defense and Traffic, Herick Dal Gobbo, in an interview with Wow.
According to the specialist, the implementation of radars based on Doppler technology is becoming a trend, which will likely lead to the installation of new equipment in other cities in the country in the future next.
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