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On-the-spot fines to punish careless drivers

16 August 2013 Last updated at 19:38 BST

Drivers across Britain who hog lanes or tailgate can now be punished with on-the-spot police fines of up to £100, and be issued with three points.

Ministers say the move will make tackling problem motorists easier.

The AA said a third of drivers risked facing a fine.

Richard Westcott reports.