ATLANTA (WAOK) - A study by Scottish researchers says that smoking in the car, even with the windows open, causes pollution levels that exceed official safe limits set by the World Health Organization.

“Tobacco Control” journal reports the team took measurements during 85 car trips using a device strapped to the back seat of the car.

During the trip the driver smoked from one to four cigarettes.

The results show that even with just one cigarette smoked and the windows open, pollution levels exceeded the limit at some point during the drive.

The study concludes that there is a clear need for legislation to prohibit smoking in cars where children are present.

The British Medical Association wants all smoking in cars to be banned.