Police are appealing for witnesses following an act of dangerous driving.
The incident took place at around 5.40pm on Thursday December 31.
A white Toyota Hilux overtook a white Ford Focus travelling southbound on the A68 north of Earlston. The Hilux then overtook the Focus next to the Earlston Co-Op Filling Station before braking and blocking the carriageway. The driver of the Hilux then exited his vehicle, causing concern to the occupants of the Focus.
The Focus subsequently drove past the car and was overtaken, at which point the Hilux again stopped and blocked both lanes of the carriageway. The Focus has proceeded to drive around the vehicle, and was then overtaken again before the Hilux was lost to sight.
As the Focus passed Leaderfoot Bridge the Hilux drove northbound, at which time an object struck the Focus’s windscreen and shattered it.
The driver of the Hilux is described as being in his early twenties, short, with short black hair.
PC Phil Moule of Hawick Police Station said: “This was a very distressing incident for the driver of the Focus and her two passengers, and the shattering of her windscreen could have had serious consequences.
“We’re appealing for anyone who recognises the description of this vehicle and its driver, or who saw the vehicle in the area around this time, to get in touch.”
Anyone with information is asked to contact Police Scotland on 101 or contact Crimestoppers anonymously on 0800 555 111.