Whilst many smokers would consider their car as the last refuge from the ban that has prevented them from lighting up in public they can now be prosecuted for driving without due care and attention.
Under the new Highway Code, which comes into force today, having a cigarette while driving is a breach of the rules of the road and classed as a "distraction".
It means that if a driver crashes his or her car while smoking they could be charged with driving without due care and attention. That could mean a fine of up to £2,500, three to nine penalty points or even a ban.
The move is technically regarded as "best practice" but failing to observe the advice does leave motorists vulnerable to prosecution.
It is one of 29 extra rules issued by the Department for Transport in the Highway Code, which is now 135 pages long — 42 more than the previous version brought out in 1999.
Other additions include drivers being advised to stop if they are dazzled by the sun.
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