Mr. Drew Harris:

The drugs we seek to find are cannabis, cocaine, benzodiazepines, opiates, amphetamines and methamphetamines. It is a select group of illicit drugs. We test for their presence. The assumption is that, if they are present, they cause an impairment of a person’s driving ability. This is the way our legislation is framed.

Regrettably, Ms Hilman and I are reading about fatal road traffic collisions. We can see a pattern of detections regarding people who have been under the influence or who have had some form of impairment from having drugs in their systems and then were subsequently tragically involved in road traffic collisions. This is a problem and the difficulty is that we do not know if these were drugs taken the night before, an hour before or four days before.