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Very simply by measuring either the time between point A in the frame and point B or by taking two stills and measuring the difference between these and cross referencing it with the time between the two stills.

The camera bit in speed cameras don't measure speed at all. Usually the camera is just a camera, an high-quality one with good automatic features. But the camera is connected to a radar, very similar to the handheld radar guns police also use/used. The radar is what measures the speed, and if it's above a certain threshold the radar triggers the camera to get some evidence of the event.

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13y ago
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13y ago

In some countries speed cameras measure your speed in kilometers per hour, in others in miles per hour.

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12y ago

They use the doppler effect.

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Q: How does a speed camera calculate a cars speed?
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Related questions

How does a speed camera calculate speed?

By using the "doppler" effect and measuring the change in frequency.


What sensor is used to detect cars going over the speed limit?

A GATSO speed camera


Who invented the speed camera?

Gatso is a brand of speed camera invented by Maurice Gatsonides.


How does a gasto speed camera work?

A speed camera work when a driver is on high speed then the speed camera will take a shot of the car witch will have the number plate then they will be able to find all the information on the driver…


Do all speed camera work?

the answer to your question is no because the consumers can make a fake speed camera


Can a speed camera catch you from the other side of the road?

Depending on the position of the camera, a speed camera may be able to catch you from the other side of the road. It is best not to speed where you know there are cameras.


How many hours does it take to drive 574 miles?

That depends on the speed. Divide the distance by the speed to calculate this.That depends on the speed. Divide the distance by the speed to calculate this.That depends on the speed. Divide the distance by the speed to calculate this.That depends on the speed. Divide the distance by the speed to calculate this.


What speed is the average remote controlled car going up a 45 degree angle?

Cars - whether remote controlled or not - have a vast range of speeds. There is no systematic study to calculate the average speed.


Where can a speed camera detector be bought?

Speed camera detectors can be bought from many online websites. The website, RadarBusters, has a single model for sale, and Amazon has several speed camera detector models for sale as well.


How speed camera recognize number plate?

Because security people look back at the camera so the speed camera isn't the one that really picks it up!


A tourist drops a camera from 20meter high bridge what is the speed of the camera as it hits the water?

more information is needed, such as weight of the camers, shape of the camera, and the wind speed


How do you avoid getting shoot by a speed camera?

Don't speed!