The issue focused on whether police had been properly trained on what to do on the ground when people show signs of impairment.

It also addressed what the government should do next, including what to do with the people who are arrested.

In the case of a motorist accused of driving under the influence of drugs, the court was told there was an offence for causing death, but there were no offences for causing grievous bodily harm.

The judge said the prosecution had not established beyond reasonable doubt that