Hair-raising footage of a camper van motoring down the wrong side of the busy A9 has triggered calls for increased safety measures.
The motorhome was spotted driving at full speed along the 70mph stretch into the face of oncoming traffic.
It happened just before 6pm on Sunday, near Ballinluig in Highland Perthshire.
Video of the incident, shot by eye-witness Alan McConachie, went viral on social media and has prompted calls for improvements to road signs and markings.
It is understood the driver became confused when the single track road turned into a dual carriageway.
Mr McConachie, 25, from Elgin, said: “I was behind the motorhome for a few miles.
“As the road became the dual carriageway, they swerved across the centre line into the fast lane of the opposing road.”
He said: “There were people flashing him. Drivers could see what was happening and moved lanes early.
“As I was passing, they were putting on their brakes so I imagine they turned round.”
It is the latest in a series of incidents involving vehicles travelling on the wrong side of the A9 and campaigners said it lent weight to demands for an upgrade.
Local Conservative MSP Murdo Fraser said: “This is a terrifying incident which could easily have resulted in serious injury or death.
“In recent weeks we have had a spate of serious accidents on the A9, which again highlights what a dangerous road it is.”
Mr Fraser said: “Whilst there can never be an excuse for poor driver behaviour, the configuration of the A9 is undoubtedly a factor in the accident rate.
“The case for dualling the road is stronger than ever, and I have been pressing the Scottish Government to advance the timetable for this vital work if that is at all practical.”
Independent Highland Perthshire councillor Xander McDade added: “This is obviously a concerning incident but sadly not an isolated one.
“I can think of a number of recent occurrences where I have personally seen hire cars driving on the wrong side of the road.”
Mr McDade said: “There is a real need for increased signage to remind drivers to drive on the left, including with more on-road arrow markings when the road changes from single to dual carriageways.”
Local Conservative councillor John Duff added: “Thankfully no one was injured, but I am sure it was a frightening experience for everyone who witnessed it.
“This highlights the need to complete the dualling of this section of major trunk road as soon as possible.”
A Transport Scotland spokesman said: “It is essential that we follow due process with the dualling programme which requires in depth planning and design to ensure that we deliver the right schemes at the right price, as well as keeping impacts on communities, businesses and the environment to the absolute minimum.”
Police Scotland said officers had not yet been alerted to the incident.