Victoria Police south-west road safety advisor Senior Sergeant Shane Keogh said he would take the idea to regional command that arrows be painted every 200 metres.

"It might make it look like a landing strip but it could also improve safety for all road users," he said.

"The suggestion would be for the arrows to be reflective, highly visible.

“There has to be additional things we can do to make driving along the Great Ocean Road safer for the hundreds of thousands of people who use it every year and that's what I'll be suggesting.”

Safety on the Great Ocean Road was highlighted on Wednesday. Two Asian tourists travelling on Princetown Road veered onto the wrong side of a sweeping bend near Cooriemungle and crashed head-on with a vehicle.

The woman passenger in the Hyundai died and the driver remains in a critical condition at Melbourne’s The Alfred hospital.

The driver of the other vehicle was treated by paramedics for minor injuries.

International tourists driving on the wrong side of the road have led to fatalities and serious injuries in the past even after road signs were erected.

“It guts you a bit, cuts away at you,” Senior Sergeant Keogh said.

“Muscle memory is a huge problem for international drivers and then there's the obvious issue of fatigue.”