Hundreds of Victorian bus drivers will again walk off the job for a third day of protected industrial action calling for better pay on Tuesday.
But drivers have agreed to strike after the morning school run.
About 70 routes in Ballarat, Geelong, Melbourne's eastern and western suburbs won't run between 9am to 1pm on Tuesday during the ongoing strike action.
The CDC Victoria employed workers want a four per cent wage and one per cent superannuation increase as part of a new enterprise bargaining agreement being negotiated.
Transport Workers Union national vice-president John Berger said it was the first time in 20 years drivers had taken industrial action.
While CDC Victoria chief executive Nicholas Yap was disappointed the TWU had decided to again disrupt services, he was glad it will not affect school children.
"We understand that our drivers had a significant say in this and thank them for prioritising the needs of the community," he said.
Public Transport Victoria chief executive Jeroen Weimar said it was important the services would not impact school services and urged the union and company to negotiate "in good faith".
He was encouraged by the mediation that began between both parties at the Fair Work Commission last Friday, but did not want discussions to end there and a deal to be struck.
About 600 drivers took action on Tuesday and Friday after negotiations stalled on the new agreement.