Adelaide bus commuters have been left confused with drivers refusing to collect fares as part of an industrial dispute, but inspectors have flooded services and warned commuters to pay up.
Transport Workers Union (TWU) state secretary Ray Wyatt said drivers in the union will not collect the fares indefinitely from Wednesday on public transport services provided by South Link and Transfield Services.
But a spokesman for the Public Transport Services warned commuters had an obligation to pay for their rides despite industrial action and inspectors will be checking tickets.
The drivers also will strike on Sunday for four hours from 10 am (CDT) and will wear TWU campaign T-shirts instead of uniforms from then until the dispute has been resolved.
About two-thirds of drivers are in the union and the two bus companies service about two thirds of the network.
The union wants a five per cent pay increase while the companies have offered 2.8 per cent.
They also want improved safety measures for drivers, such as on-board security staff and changes to broken shifts.
SA Industrial Relations Minister John Rau has said the dispute was not an issue for the government to become involved in, as it was between drivers and the two companies.