Frightening footage has shown a man driving a tractor while on the phone.
Jason Bartlett was in the car with his partner Kelly, and young children Jessica and Oscar before spotting the tractor at around 4.45pm last week (June 28) while driving on the B1187 near Guyhirn, Wisbech, Cambridgeshire.
Mr Bartlett, who took the footage, says his partner – who was driving – felt unable to drive round the tractor.
He said: "I wasn't impressed. It's not a great road, with poor surface.
"My partner was frightened to overtake with our two young children in the car in case he lost control or was oblivious to us on the road.
"We obey the law… unlike some."
What's the law on driving with your mobile phone?
Unless you've been living under a rock, you should be aware that driving using a handheld mobile phone while behind the wheel of a car is illegal.
The penalty for being caught is six points on your drivers license and a £200 fine.
A Cambridgeshire Constabulary spokesman said: "If you use a mobile phone whilst driving you significantly increase your chances of being involved in a serious, even fatal collision.
"Using a phone behind the wheel not only puts your life at risk, but that of other innocent road users."