A drug driver has been caught after he rolled his car on the Hume Highway while swerving to miss a fox.
The driver lost control of his car south of Holbrook at 5.20pm Monday, leaving the road and rolling a number of times in the median strip.
No other cars were involved.
Police said the driver did not have alcohol in his system, but returned a positive drug test to cannabis at the roadside.
He admitted to having four joints of cannabis in the previous 24 hours and having a passenger in the car earlier that day who was smoking cannabis.
Police will await the results of further drug testing before possibly charging the driver with driving with an illicit substance present.
Despite the driver's efforts, the fox was hit by the vehicle and did not survive the collision.