Police are urging passengers to speak up if someone is using a mobile phone at the wheel.
Using a mobile phone while driving can have fatal consequences for anyone travelling in a vehicle involved in a crash.
This month, the Bedfordshire, Cambridgeshire and Hertfordshire Road Policing Unit are out looking for motorists breaking the law as part of the latest Think! campaign.
Inspector Mark Rogers said: “When someone uses a mobile phone while driving, their reaction time becomes 50 percent slower and they are four times more likely to have a collision, therefore, they are putting themselves and anyone else in the vehicle at great risk.
“People would not get into a car being driven by someone over the alcohol limit and yet recent research has compared using a mobile phone at the wheel with drink driving.
“Passengers should not be worried or feel awkward about challenging a driver who breaks the law: it could save a life.”
Driving while using a phone is one of the ‘fatal four’ driving offences, along with speeding, not wearing a seatbelt and drink or drug driving.
Motorists are advised to turn their mobile phone off or lock it in the glove box.