Ken Schumacher has been driving pupils to and from Outram School since June last year.
He said not a day had gone by where a vehicle had not sped past him, putting children at risk.
"I’m s...-scared that something’s going to happen," he said.
The speed limit past a stationary school bus is 20kmh.
"What we’re seeing at the moment is cars screaming past at 100kmh."
There were seven stops on his route which were mostly on the side of rural roads, including Henley-Berwick Rd which was on the way to the Dunedin Airport.
He said the school’s community had been trying for years to get signs warning of the school bus put up by the NZ Transport Agency and the Dunedin City Council.
"The issue is none of the authorities can be arsed to spend some money to slow the cars down."
He said the NZTA "passed the buck" to the council, and the council had not answered his calls in about three weeks.
Three other buses also operated along the same rural roads and faced the same issues, Mr Schumacher said.
"Some of the other guys are having the same problem.
"The other day [a driver] was waving at the cars to slow down and they just give him the finger and drove past."
"They don’t give a s.... They’re late to get to the airport so they just scream along."
Outram School parent Kristen Slocombe said it was worrying her two boys were getting dropped off while cars sped past.
"We’re very lucky in that our kids get off on the same side of the road as our house.
"But, I mean, they’ve only got to chase the ball out don’t they, or [do] something silly behind the bus."
While the onus was on the drivers to slow down when passing a school bus, it would be helpful if there were signs warning people who were unaware of the road rules, including tourists coming and going to and from the airport, she said.
"As a parent it’s only going to take one catastrophic accident."
An NZTA safety spokeswoman said most buses operated safely across the country but occasionally issues arose with poor behaviour from other drivers.
She said the bus driver or bus company should advise police of their concerns, as it would be an enforcement issue at that point.
There were only a small number of issues with school bus safety and it was not an area the agency was prioritising.
Nonetheless, it was supportive of the local community by allowing it to place its own road safety signs in the road reserve.
Council transport group manager Jeanine Benson said school buses carried signage to alert motorists to the legal requirement to slow down to 20kmh, and failure to do so was a police matter.
She said the State Highway 87 portion of the route was NZTA’s responsibility and signage changes needed to be requested by the agency.
