Motorists have been warned that solid white lines on the road mean no passing - not just 'no overtaking' .
Drivers are being warned a double white line, where the line nearest you is solid , means you must not cross or straddle it.
That is unless you're entering or leaving from a side road, BirminghamLive reports.
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Rule 129 states that you can only cross the line, provided the road is clear, to pass a stationary vehicle or overtake a bicycle, horse or road maintenance vehicle if they are travelling at less than 10mph.
So if you're sat behind a tractor doing 15mph, overtaking it would mean you are breaking the law.
The Highway Code states: "You may cross the line if necessary, provided the road is clear, to pass a stationary vehicle, or overtake a pedal cycle, horse or road maintenance vehicle, if they are travelling at 10 mph (16 km/h) or less."
Falling under section 36 of the Road Traffic Act 1988, motorists can be slapped with a £100 fine and three points for failing to comply with traffic signs or markings.
And that could increase to as much as £1,000 if the case goes to court.
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