20mph speed limit law

New 'ultra speed camera' can see inside driver's vehicles
A new kind of ultra speed camera is being trialled on roads in the UK. Over 100 have already been introduced in Manchester city.

The Jenoptik VECTOR-SR is the latest in speed camera tech. It can catch drivers speeding on either side of the road, and see inside cars.

This means it can catch drivers that aren't wearing a seatbelt or using a mobile phone while driving.

The cameras don't flash either, which means it might be difficult to motorists to tell if they've been caught.

 

Is there a tolerance on speed cameras?

Yes - most speed cameras have a tolerance of 10% + 2 mph.

For example, if a driver’s speed goes over 30 mph, they might not get a fine unless they reach 35 mph.

This is mainly to accommodate different types of speed and traffic cameras. For example, speed cameras, speedometers and portable speed meters.

The tolerances are also there to allow for driver safety. You could miss a hazard if you're constantly looking at your speedometer.

Go safe says:

"The speed limit is the maximum speed – it’s not a target speed."

When safety camera programmes came about, GoSafe adopted the NPCC guidelines which takes into consideration any variances in speedometers.

This doesn't apply to police officers – they can enforce at different levels.

Here are the speed limit thresholds: