SAFETY campaigners in Oxford celebrated five years ago when 20mph zones were brought in across the city following a £250,000 investment by the county council.

But the celebrations fell flat when campaigners realised that the zones were not being enforced by Thames Valley Police.

The force did not start patrolling until 2012, but even then police only punished motorists doing 32mph or more because a safety course was not available for those breaking the 20mph limit.

Now the speed awareness course will be up and running this month, so drivers going 24mph in a 20mph zone can face a fine, and points on their licence, if they choose not to sit the course.

At least now the situation is clear for drivers – if they are in a 20mph zone they need to stick to the limit or face paying the penalty.

This clarity will mean that 20mph zones can be properly effective in terms of improving safety by reducing traffic speeds.

There is no doubt that reduced speeds can save lives and prevent serious injuries and, for example, in areas around schools, it is crucial to keep children safe during the school run.

Some drivers will question the force’s motives when they are travelling at a seemingly modest speed, so Thames Valley Police must ensure the new measures are not perceived as a cash cow.

Arguments will continue about whether 20mph zones are suitable in particular streets, including St Giles, but at least there is now a clear message to drivers about the consequences of ignoring the limit.