Thank you.
Now, there are people who are skilled in screening for drugs and other substances. We know that when it comes to determining alcohol levels, there are issues involving timing, quantity, weight and height that can help the police. For example, the police use a breathalyzer test to determine whether the person's blood alcohol level is over the legal limit. We therefore have all kinds of tools to help lay charges and establish a defence.
When it comes to drugs, have we already determined everything we have and everything we know about time, height, weight and quantity? Will police officers know how to use those guidelines, or will they be adrift, so to say? I am not trying to ascribe ill intent to anyone, but this is something I would like to know. We are very familiar with alcohol, because for over 20 years we have been focusing on time, height, weight, quantity and other factors that affect how it acts. But will that kind of knowledge be available to drug recognition experts, or DREs?