Police Scotland is making enquiries following an act of reckless conduct at Tannage Brae, Kirriemuir.
It is understood that three youths were throwing tree branches on to the main carriageway.
The incident happened yesterday (Thursday, March 23) at around 6.15pm,
Officers are keen to speak to three males - one is described as five foot six inches tall wearing a black hooded top and the other two are described as wearing light coloured hooded tops.
Anyone with any information that may be useful should contact Tayside Division on 101 quoting CR/7286/17 or speak to any police officer.
Alternatively information can be passed anonymously via the charity Crimestoppers on 0800 555 111.