A driver was arrested after being stopped while driving at 110mph on the A11 in Norfolk.
Road police officers clocked the car breaking the speed limit near Thetford on Saturday night.
The motorist subsequently tested positive in a roadside test and was arrested on suspicion of drug driving.
Sergeant Chris Harris, of Norfolk & Suffolk's Roads & Armed Policing Team, tweeted: 'Great work team. Its stops like these where you never know what you may have prevented. The roads will be safer for us all.'
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here