Balmore Road was closed following a car accident involving a police vehicle.
The road was blocked off between the Allander Toll Roundabout and Torrance following the incident at Balmore at around 10.10am on Friday when a marked BMW police car was involved in a crash with a Renault Megane,
Ambulance crews attended and the two male occupants of the Megane and a male police officer were checked at the scene.
The other male police officer was taken to Glasgow Royal Infirmary as a precaution but was discharged after being examined.
At the time of the crash the police car had been responding to an emergency call and had emergency lights and klaxon in operation.
Police are appealling for any witnesses to contact the Road Policing Complex on 0141 532 6400.
Traffic had to be diverted with long tail-backs in Bishopbriggs caused by traffic heading to Kirkintilloch.
The road opened again at around 1pm.