Brisbane commuters are facing the prospect of lengthy delays as bus drivers strike over an ongoing dispute about pay, safety and conditions.
Brisbane City Council has accused the Rail, Train and Bus Union of leaving 35,000 workers and school students "high and dry" while hundreds of workers take industrial action between 4.30am and 6.30am on Tuesday and Wednesday.
Customers who travel between 4.30am and 7.30am have been urged to make alternative arrangements, but flow-on effects could be felt throughout the day.
Council's public and active transport chairman Adrian Schrinner said the strike would leave 5000 students without school bus services, something that contravened TransLink's Child Left Behind Policy.
"Council is extremely concerned about the possible risk to student safety," he said in a statement on Monday.
RTBU secretary Tom Brown told AAP on Monday the action was a last resort in an attempt to get the council back to the negotiating table.
Mr Brown said the dispute centred around proposed pay increases, conditions and safety issues following the fatal incendiary attack on driver Manmeet Alisher, also known as Manmeet Sharma, last year.
Mr Brown said the council had offered to double the budget for security guards, but it didn't go far enough.
"We would like to see people with more power than security guards," he said.
Mr Brown also said the council's proposed pay increase of 2.5 per cent over three years would not make a difference to drivers doing it tough.