Fines for using bus lanes have overtaken parking tickets as the major complaint from motorists, the AA has revealed.
The organisation said complaints from Glasgow, Leeds, Manchester, Cardiff, Bristol and London about bus lanes seem to top the list.
The number one complaint, it said, was from drivers wishing to turn left, doing so early for safety reasons and then being caught on camera going into a bus lane.
Complainants often cite faded road markings and poor signage.
The AA has also received complaints from drivers pulling over into bus lanes to allow emergency vehicles to pass and receiving tickets.
Some 554,773 fines are generated outside London and 242,541 within the capital per year.
These fines are worth tens of millions of pounds to the local highway authorities as, unlike speeding fines, the money goes to the local authority.
The AA believes that when an individual camera is raking in millions of pounds per year there must be something wrong with the signage, the road layout or the junction engineering.
It said highway authorities should apply more discretion or give warnings when thousands of drivers are apparently getting it wrong.