Police are appealing for witnesses following a road rage incident on the Lhanbryde bypass
A man driving a blue Nissan, possibly a Micra, shouted and swore at a female driver before stealing her car keys.
The incident happened around 6.20am on Thursday, August 21.
The man was in his 30s, about 5ft 8in and stocky with a bald head.
PC Paul Thompson said: “The lady involved was understandably distressed by this incident and was unable to continue her journey after her car keys were stolen.
“For this individual to behave in this manner is totally unacceptable and we are keen to speak to anyone who may have witnessed the incident to assist us with our enquiries.
“This type of bullying behaviour on our roads will not be tolerated.”
Anyone with information should call 101 or Crimestoppers on 0800 555 111.