What is not welcome is blatant attempts at using traffic management schemes as a method of generating income.
Speed cameras serve a purpose - they are there to reduce accidents and save lives, whereas more bus lane cameras will bring in more cash to council coffers.
Visitors to the city unaware of alernative routes or camera locations will find themselves falling foul of the bus lane trap.
The purpose of cameras should always be to act as a deterrent, so the number of breaches falls, and less cash is generated. When it is seen as a source of income it is a traffic measure imposed for the wrong reason.
Yes, the city centre needs a plan to reduce congestion and ease the flow of public transport, but employing new cameras to catch more drivers in bus lanes won't achieve that.
It will however add to the frustration and anger of motorists and of the retail industry, who have argued against bus lanes.
Any measure which adds to the appeal of out-of-town shopping malls is not good news for the city centre.
This will result in driving more people away.