The Government is seeking public feedback on how
drug driver testing can improve road safety.
Drug testing behind the wheel isn't as simple
as it is for alcohol because the current drug tests can only
detect the presence of drugs or medication - not whether a
driver is impaired by a drug.
Minister of Police Stuart Nash says: “irrespective of whether someone is impaired by alcohol, medication or recreational drugs, they shouldn’t be behind the wheel”.
The accompanying discussion document contains data on the number of drug and alcohol-related fatal crashes. Analysis by ESR forensic scientists of the blood samples of drivers killed in crashes between January 2014 and May 2018 shows 29 per cent had used alcohol, 27 per cent had used cannabis, 10 per cent had used methamphetamine, and 15 per cent had used other drugs.
The Government is
looking for feedback on:
• the methods that could be
used to screen and test for drugs
• the circumstances
in which a driver should be tested
• what drugs should
be tested for
• how an offence for drug driving should
be dealt with by police.
The SMC asked experts to
comment. "It is excellent to see that there is a
focus on impairment rather than simply detecting drugs in a
person’s system, as there are problems with the concept of
‘impaired’, particularly in relation to drugs like
cannabis which stay in people’s system for a long time.
Are people impaired or have they just smoked a joint two
weeks ago? "If someone smokes cannabis on a Saturday night
and tests positive on a Monday morning they will have
cannabis in their system but not be impaired – similar to
if someone drank a glass of wine or had a bottle of beer on
a Saturday night, they would not be impaired on a Monday
morning. "Any impairment that affects people’s driving
and has the potential to cause accidents is a cause for
concern. "Roadside testing must not fall into the trap
that workplace testing has, and make sure that drivers who
are drug tested at the roadside are actually those who are
impaired. However, drug impaired driving is already
happening. Many prescription medicines, particularly opiate
based ones like tramadol (also sedative antidepressants,
antipsychotics, antihistamine, and some antiepileptic
medicines) impair people’s driving, so drug driving is
occurring on many levels in New Zealand (as well as in other
countries). "It is also excellent to see public
consultation on this issue as well as a focus on reducing
the harm from drivers who are impaired by alcohol and other
drug use." No conflict of interest.
________________________________________
Dr
Fiona Hutton, Senior Lecturer, School of Social and Cultural
Studies, Victoria University of Wellington,
comments: