Efforts to persuade motorists not to drink and drive appear to be stalling - but fewer drivers are speeding, according to new figures.
Last year, six per cent of drivers admitted to taking to the road after having an alcoholic drink, with six per cent owning up to driving "the morning after the night before".
And a survey by Sainsbury's Car Insurance has shown that these figures have not changed during 2012.
Also unchanged – at 18 per cent – is the number of people who continue driving when feeling tired.
However, the driver-behaviour survey did show that the number of people admitting to exceeding the speed limit by at least 10mph had fallen from 19 per cent in 2011 to 17 per cent in 2012.
Also, while six per cent admitted using hand-held phones at the wheel in last year's survey, only five per cent owned up to that offence this year.
But the proportion of drivers who texted at the wheel had risen from four per cent in 2011 to five per cent in 2012.
And those driving while wearing inappropriate footwear, such as flip-flops, remained constant at 12 per cent.
Some three per cent admitted driving without a seatbelt in the 2012 survey, compared with five per cent in 2011, while those admitting tailgating had fallen from five per cent last year to four per cent this year.
Eating and drinking at the wheel appeared the most common bad driving habit, with 27 per cent admitting to it.
As many as three per cent of women said they did their make-up while driving, while two per cent said they drove without their glasses or contact lenses.
Sainsbury's Car Insurance head Ben Tyte said: "It's encouraging to see that driver behaviour on our roads remains, on the whole, at a consistent level and is improving in some areas.
"We're pleased to see a reduction in excessive speeding, as this is the cause of so many accidents on our roads."
The results came from interviews with 1,600 British drivers.