Drivers who hog the middle lane or tailgate other cars face on-the-spot fines of £100 and three points on their licence, under new measures announced today.
The fine for using a hand-held mobile phone while driving or not wearing a seat belt will also rise from £60 to £100.
Report by Amy Welch.
Here are the answers to our "How up to speed is your knowledge of the road?" quiz.
As new plans are announced to tackle motoring offences, are you up to speed on the rules of the road?