According to the Toronto Star, The TTC claims the tests detect whether someone is impaired at the time, not whether they use drug or alcohol while off-duty. Of course, that’s impossible when it comes to Cannabis. The TTC will not disclose what substance the driver tested positive for, but does say that the test detects several common intoxicants including marijuana.
There are several problems with testing for Cannabis impairment…
1. Medical use. A medical user may actually need Cannabis to function properly and could be impaired by not using their medication.
2. Tolerance. Habitual users typically do not become impaired from regular use due to their high tolerance. While a new user may become impaired from a small dose, a habitual user could feel practically no effect from the same amount. Cannabis smoking history plays a major role in cannabinoid detection.
3. Measuring impairment is impossible. Studies have shown that measuring THC can’t determine impairment. Arizona’s Supreme Court ruled that while state statute makes it illegal for a driver to be impaired by marijuana, the presence of a non-psychoactive compound does not constitute impairment under the law. A daily user could have consumed the night before and test positive the following morning while completely sober after a full night sleep.
So, when the TTC claims they are testing only for impairment on the job, that’s not actually true.
Written by Alternative Free Press
TTC Claims To Be Testing For Drug Impairment, Even When It’s Impossible by AlternativeFreePress.com is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.