I don't see how they can ban this one...

...but as soon as they figure it out, 'eating and driving' will be next on the agenda.

 How a heavy lunch can be a menace to motorists: A big meal makes it harder to concentrate on the road

Eating a big meal will not only lead to you dozing off in the armchair. It could make you drift off behind the wheel.
A study found that a big lunch, even without the effect of alcohol, can make it harder to concentrate on the road, leading to potentially dangerous mistakes.

Who comes up with the ideas for these rubbishy studies? They must have grant money to burn. This one kills two target groups with one stone - fatties and drivers. They even throw in a reference to alcohol.

Young men who did a test drive in a simulator after a fatty and sugary meal were more likely to drift into another lane than those who had a lighter lunch.
While the effect of alcohol on motoring skills has been much researched, this study is one of the first to look at the impact of a full stomach.
Twelve healthy young men attended Loughborough University’s sleep research centre for a lunch of beef lasagne and a toffee yoghurt. 

A driving simulator? Where presumably you can't turn on the radio or wind down the window.

Half were given diet versions, totalling 305 calories. The others ate the normal versions, which were much fattier and full of carbs, and had a calorie count of 922.
All normally slept well but had only slept for five hours the previous night, something the researchers say would not be unusual.

Five hours sleep? I get at least seven per night. This study seems tainted from the start. Should they not have done it with well rested people then they could be sure the results were purely down to the food and not last nights lack of sleep?

After lunch, they were put in a driving simulator and tasked with a two-hour-long, dull, monotonous ‘drive’ along a dual carriageway with long straight sections and gradual bends.

With traffic lights stopping you every 500 yards, HGV's to pass etc?

Those who had the heavy lunch were more likely to drift into the other lane. They started off not too badly, making just as many mistakes as the light lunchers for the first half hour but after that there was no doubt that they were sleepier.

You know what I find to be best if I'm a bit weary of a long journey? Having a fag. Oh wait...

Writing in the journal Physiology and; Behavior (CORR), she said: ‘Although the effects of monotonous driving of such a heavy lunch combined with blood alcohol limits well within legal limits have yet to be determined, the indications are that this would be a dangerous combination after a night’s disturbed sleep.’

Translation - While the police get those roadside calorie counters ready, we need lots more money for further studies.