FROM today drivers could be at risk of being stopped and fined if they smoke with children in the car.

Drivers are expected to be given a grace period as new laws banning smoking in cars containing children come into force today.

The landmark legislation, which is designed to protect children from the effects of tobacco smoke, will see the driver and any smoker fined £50 if they have someone under 18 in the car with them.

To remind people, City of York Council will be putting flyers on cars in the city.

Police and local authorities have been told they are able to enforce the law immediately, but are thought to favour a period of educating drivers rather than enforcement action.

A spokesperson for North Yorkshire Police said: "The force will be following the guidance issued and acting upon the new legislation and enforcing when reasonable and necessary.”

Smoking groups had welcomed the new measures, which are designed to reduce the risks caused by second-hand smoke.

Ian Gray, principal policy officer for the Chartered Institute of Environmental Health, said it is anticipated there will be "very high levels of compliance" from drivers.

He said: "Hardly anyone can believe it is a good idea to smoke in your car when children are present.

"To help people comply, we have provided advice on using no-smoking signs and what to do when someone tries to smoke in your car, as well as keeping your car completely smoke-free.

"However, where people ignore all of the advice and are determined to smoke in ways that puts children's health at risk, there are enforcement measures that can be taken."

Research released today from the University of Newcastle has shown even driving with the windows open while smoking exposes those in the back to dangerous levels of chemicals.

Tests found even with the window open, levels were more than 100 times higher than recommended safety guidelines. With windows closed and the fans on, levels were more than 200 times the safe limits.