A man has been arrested in connection to the accidents, which are now thought to be linked. Yass Police believe a car was swerving or driving on the wrong side of the road.
Any witnesses are urged to provide information to Yass Police Station by calling 02 6226 9399.
Traffic is passing by the accident on Barton Hwy at Kaveneys Rd on both lanes.
Two separate accidents reported only a few hundred metres from one another on the Barton Hwy at Kaveneys Road.
First accident involving two cars reported around 6.10am. The second accident was reported just after 7am.
No injuries have been reported at this stage and both have been considered minor incidences by NSW Ambulance paramedics.
Yass Ambulance Station was called to both incidences, but called off following no injuries.
Fog on the roads is now clearing, however drivers are urged to exercise caution.
An accident involving two cars has been reported on the Barton Highway at Kaveneys Road, around 6.20am today.
Eyewitness reports suggest a four-wheel-drive vehicle is on its side in the first accident.
Southbound traffic affected.
Emergency services attending.