Department of Home Affairs weighing up costs and benefits
The cost of prosecuting drug drivers on the Island is cheaper than dealing with traffic collisions caused by those driving under the influence.
The Department of Home Affairs says that's the perspective that has to be taken, despite concerns it's putting pressure on police budgets.
Testing drivers for drugs costs around £600 each time.
Chief Officer Dan Davies says it could be more expensive not to test:
Meanwhile, Home Affairs Minister Jane Poole-Wilson says different methods will be explored: