Cambridgeshire Police are cracking down on motorists who use hand held mobile phones while driving.
Officers are stepping up patrols this month and will be out looking for the lawbreakers.
Last month 24 people were summoned to court for careless or inconsiderate driving after using mobiles to take pictures of a crash on the A14 in the county in May.
Inspector Mark Rogers said: “It is illegal to use a handheld mobile phone when driving.This includes using your mobile phone to follow a map, read a text or check social media and applies even if you re stopped at traffic lights or queuing in traffic.
“You can only use a handheld phone if you are safely parked or need to call 999 or 112 in an emergency and it s unsafe or impractical to stop.
“Getting a fine and points on your licence must be declared immediately to your insurer and can lead to an increase in your premium.
“It s also important to remember that if you re caught driving carelessly or dangerously when using a handheld or hands-free, the penalty can include disqualification, a large fine and up to two years imprisonment.
Studies have shown that drivers using a hands-free or handheld mobile phone are slower at recognising and reacting to hazards.
A hands-free phone can be used but motorists can still be prosecuted if they are not in proper control of their vehicle and the penalties are same as being caught using a handheld phone.