However many are unaware that they could be illegal and dangerous.
The RAC has confirmed drivers should make sure their car is parked within the bays at all times.
They added operators are known to issue tickets to motorists who have peaked over the lines of their space.
But there are fears drivers are not aware of the little known rule and could be caught out by the simple charge.
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Despite this police officers are enforcing the charge with a range of motorists being caught out by the penalty over the past few years.
Last year, a driver was fined £100 after parking across two bays in a completely empty car park while he popped to get some cash-out.