Big Tone wrote:
Stephen wrote:
Can I ask why eveyone is using the example of blood instead of breath for analysis, as the breath analysis is more accurate.
The reason I say this as when you blow on the machine at the police station and you choose blood because your reading was between 40 and 50ugs, when the blood sample is sent off for analysing the scientist's always deduct 5% from the actual reading as a matter of course, where as on the other hand the breath reading is the actual reading you get charged at if over the 50ugs limit.
The motorist in these circumstances is better off as if the request for blood is taken and the doctor takes his time then the chances are stacked for him as the longer the doctor takes the better it is for the driver.
The legal limit is 35ugs per 100ml of breath, but they dont get charged with the offence until they are over 50ugs and if they blow between 35 and 40ugs then they are released without any further action.
So, why is everyone wanting to change limits when they as far as I am concerned more than sufficient to cope under most circumstances.
Stephen
I confess I didn't know that Stephen, so thanks.
I don't so much want to change any limits but it does seem very austere to have a death or glory situation for a driver who is borderline.
Whether it's blood or breath, to use a maths analogy, X + dx and you're done with devastating consequences, X - dx and you're okay.
I believe that the original theory is that to 'fail the test' you must have a blood/breath alcohol concentration which is associated with a significant increase in risk in an average member of the population. I further believe that 80mg/ml represented a doubling of average risk.
Yes, people just below only get a scare. But people just above, are, on average, posing a risk to the rest of us.
The parts that bother me are:
- non-average people (e.g.the alcoholic who is stone cold sober with 120mg/ml blood alcohol OR the non-drinker who is a danger at 50mg/ml).
- morning after events where the Mellanby effect suggests that blood alcohol may have fallen considerbly more slowly than drunkenness.
But, on the whole, you don't need a drink to drive and none is best. You can't say that about speed...