Dashcam footage of a car narrowly avoiding a head-on with two police motorcyclists while appearing to overtake illegally in the Adelaide Hills has been released by authorities in a bid to improve driver behaviour.

The driver was identified on the day and is expected to be reported for dangerous driving.

The footage was supplied to police by a driver who also filmed two motorcyclist and another car driver making "poor choices" while driving to work in the Cudlee Creek area.

Police said the other three motorists had been identified and were expected to be issued with expiation notices for failing to keep left of the dividing line.

"This footage shows motorists who were seconds away from collisions that could have had devastating impact for themselves and the other drivers in the area," Superintendent Anthony Fioravanti said.

The dashcam footage was taken just days after the State Government announced it was considering licensing reforms in an effort to reduce motorcycle deaths in SA, which tripled in 2017.

Police have also been fighting an ongoing battle to stop motorists treating picturesque and winding sections of the Adelaide Hills as a "race track".

They said they have consistently detected motorcyclists exceeding speed limits by between 40 kilometres per hour and 60kph.