Villagers using a “lifeline” bus service into the capital have criticised plans to double the journey time.
If Stagecoach proposals go ahead, the Pentyrch to Cardiff bus will take nearly an hour to travel under eight miles.
More than 200 passengers have raised concerns.
But Stagecoach says the suggested changes reflect customer demand.
It wants to scrap 136 service and replace it with a modified 124 service, which takes longer.
John Reid said: “It’s a lifeline to get into Cardiff for anybody really, but especially for a lot of the older people.”
Carolina Sagarmendi added: “People in the village need the bus to get into town as quickly as possible.”
Gavin John-Hill, Conservative councillor for Pentyrch, said: “I feel at the moment Stagecoach haven’t really given enough consideration to the needs of the residents and the proposal they’ve put forward are very sketchy at best.”
Stagecoach said: “We’re proposing to make changes to these services which serve Cardiff, Creigiau and Maerdy to reflect customer demand and to improve the reliability of the services.
“We encourage our passengers to review the proposals and provide feedback by 2nd March.”