Re: MAPS: marijuana and impairment.

[Cyrus McCandless <cyrus@xxxxxxxxxxxx>]

I had heard a couple of years ago that two major insurance companies did a
very large study to determine whether marijuana users were an
insurance risk.  They used records of blood samples taken from people
involved in accidents, and found that people with THC in their blood were
actually less likely to be the *cause* of an accident, although it says
nothing about whether they would be more likely to be involved in one.  

Can someone on this list confirm/provide a reference for this, and maybe
a place to obtain the report?

Cyrus

On Fri, 30 Apr 1999, John Baltic wrote:

> A question on marijuana impairment, mostly as it relates to driving an
> automobile.  Can it be measured?  Is there a test?
> 
> With alchohol we measure the amount in the blood or breath and set a limit.
> How might impairment be tested in subjects who may have smoked marijuna?
> 
> The other questions are, of course, does marijuna use cause any impairment
> of functioning?   Maybe marijuna users are better drivers than nonusers,
> right?  Maybe it enhances functioning, or some functioning, up to a point.
> 
> 
> 
> 
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