More than a quarter of motorists text while driving while those who use cars for work are even more likely to offend.
And more than one in seven say they apply make-up or shave while at the wheel, the survey by road safety charity Brake and insurance company Direct Line found.
Of those who used a vehicle for work, 31 per cent said they texted while driving compared with a figure of 28 per cent for non-work drivers. A total of 17 per cent of for-work drivers admitted to attending to personal grooming while at the wheel compared with 14 per cent for non-work motorists.
Drivers using vehicles for work were more likely (37 per cent) to talk on hands-free mobiles while on the road than non-work drivers (24 per cent). The poll also found that 54 per cent of for-work road users admitted to speeding on 60mph roads, compared with 34 per cent for non-work drivers.