Hi - dropping in to see if anyone interested in this subject. Cos I'm with a group that lets road users know the risks. So thought would give some basic info and then if people want to comment, ask q's or tell us something go for it.
Don't know much about issues for motorcyclists. But hopefully these basics useful...
15-35% of the road toll is probly caused by drug intoxication here in NZ. Effects often different to alcohol and will be much worse if say 1 RISK drug is mixed with another or ANY alcohol too. RISKY - opiates, benzos (tranx), P in excess, smoke especially in the first hour after smoked (6 x crash risk ='s youth blood alcohol limits crash risk) and cannabis (tolerance no protection).
Cannabis found in blood of over 20% dead Aussie bikers but only in approx 3% of all other live drivers on the road. A NZ household survey found most smokers avoid driving when getting stoned - draw your own conclusions
Mixed with alcohol smokers crash risk skyrockets to 100x or same as a very high blood alc level (Ramaekers study). Medicines taken properly don't up crash risk enough to worry about but methadone can be dodgey. If not yet adjusted or if you're overmedicated or if you're underdosed (withdrawals cause bad sleep and anxiety and even other drug abuse to self medicate which in turn cause road risk). Driving after iv opiates dangerous up to 10 hrs.
General Drug Effects -
1. Objects can appear further away (visual effect plus time sense altered)than they are so misjudgements of distance or gaps even fine but fatal ones can occur eg get too close to centreline or other traffic (P and opiates).
2. Heaps slower recovering from nighttime glare with several drugs eg P / E
3. Feel invincible / unreal or overconfident - risktaking
4. Anxious or paranoid or even psychotic / hallucinated causes jittery errors
5. Unless using tranquillisers reactions most often slowed due to "dreaminess" plus less aware of road environment as might get lost in thoughts
6. Not so onto it re adjusting to changing conditions eg road / weather
7. Microsleeps (split second zoning out even happens with eyes open) - maybe less likely with being in wind? Riskier if tired or hungover plus drugs
8. Less ability to problem solve / make right moves if hazards appear
If you wouldn't drive drunk then be aware of drug risk too as many aren't or deny it including our Government.Not them!
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