Beginning today Vaud police are authorized to use a new radar technology to catch motorway speeders.

Authorities will use it on the A-9 beween Aigle and Bex.

Traditional radars measure the speed of a car when it drives past a fixed point.

But the new radar is designed to measure the average speed of a car over an 8 kilometer stretch—recording the time they enter and exit the area.

That would make it easier to catch drivers who simply hit the brakes when they see a radar camera, and speed up again once they’ve passed it.

The Federal roads office and Vaud police have already been testing the technology.

And they say drivers took notice with speeding dropping 40 to 60 percent.

A second system has also been in tests on the A2 near Basel.

The technology’s already in use in several European countries including Italy and the UK.