A state-of-the-art sign that gives out specific warnings to drivers spotted breaking the law is to be used by road safety chiefs for the first time.
Oxfordshire County Council said it will be the first UK authority to use the remote control sign.
It can be loaded with eight warnings - including ones on using mobile phones, tailgating and not wearing a seatbelt - that can be brought up by an operator.
The sign is to be used across the south Oxfordshire area.
Councillor David Robertson, the council's cabinet member for transport, said: "These signs are very versatile and flexible.
"If people have slipped into bad habits with regards to seat belts, mobile phones or speed the signs will give them a jolt."