I would be interested to know the % of people within the 80 limit that are involved in accidents?

The driving test isn't a joke, as driving is very little to do with intelligence and has nothing whatsoever to do with how articulate someone is. The driving test is exactly what it says it is. It's a one-off test of a persons ability to control a car.
It doesn't claim to be a guarantee that everyone who passes it will always drive in that manner for ever.

As for a lifetime ban, why for being slightly over the limit but not for, say, driving at 100mph?

A couple of points...

As "one of the most lethal weapons on the planet" a car doesn't even come close.

If you wish for zero tolerance then be prepared to pay more tax, a lot more tax, as every town and city in the country demands more and better public transport, we simply don't have the sort of passenger carrying capability anywhere outside of London that will cope with the sort of numbers that will still need to get to work every day, including weekends, but will not use their own car because they had a drink or two the night before, or that are taking medications that may affect a breath test, or that want to stay out after 10pm, or for gods sake after 8pm on Christmas Eve in the city that I live in - no buses after 8pm on Christmas Eve, what sort of public transport system is that ?

So yes, zero tolerance, but hike up the basic tax rate to 30% from a zero starting point to pay for it.

I've always gone by the rule that if I'm driving I don't have an alcoholic drink at all. Simple logic and it seems to work.

You understand what factors are causing these deaths - if its speed then increase the penalties for speeding, its not rocket science

Zero tolerance is unenforceable - so that is not an option.

The current driving test is the toughest it has ever been - to say it is joke is simple ludicrous. What the problem is you cannot legislate for testoeroned young men lacking experience. Even if you put the age up how do the new drivers get the essential experience without the driving on the road.

One thing you could do is put a curfew and restrictions on drivers for a period of time after passing their test, as they do in other countries

How do they get the experience if you restrict when they can drive - is their evidence to suggest more accidents happen at night time for this group of drivers

Generally it allows them to drive during working/education hours usually without their ' peers ' as passengers, any infringements results in disqualification

What you could do is stop new drivers having zero experience of driving on a motorway, ensure they have experience of driving in rain and at night, its a farce that 5 minutes after passing a test a driver can take a car on a motorway for the first time and without supervision.

The same way you'd be banned if you were caught over the limit in any EU country.

The justice minister is another spineless idiot who is in the pocket of the chief constable, anything police Scotland want they get.
What should have happened is a graduated system of penalties as they have on the continent with fines and drink awareness courses for those with 50-79mg/L and a ban over 80mg/L

And if you're at the missing 80mg/l ... you get a cigar for brinkmanship?

I can see the sense of being banned from driving in Scotland if you are over the limit that they have set , but surely you should still be allowed to continue to drive in England as you would not have committed an offence there .
There are plenty of ANPR cameras around that could help enforce such bans . They read your registration plate and know if the vehicle is taxed , tested , insured , and who should be driving it . If you drive past one in a vehicle registered to a banned driver then you are instantly pinged to local plod cars and you will be pulled over . I was once stopped four times in one day near York for having no test/tax/insurance , and the vehicle not being registered . Plod said I had been highlighted by local cameras .

As for sorting out the drivers that are involved in the other six out of every seven deaths on Scottish roads .. Is it the drivers that are causing the problem ? Reports have only mentioned 'deaths on Scottish roads' . It could be blamless drivers that are going about their daily business and schoolchildren throwing themselves under the wheels . It could be people jumping from bridges and dying on the road . I am of course assuming that they are only counting human fatalities in their figures .

Agreed a good point

So if (for instance) I cop a driving ban for drink driving in Scotland (highly unlikely), then the next time I go I just take the wifes car.

Or are you proposing that thousands of police man the roads and stop every car that is being driven by someone of the opposite sex to which is registered as the named owner ?

Could be fun with company cars and HGV's.