Many studies show that the impact of cannabis smoking is beneficial on driving, and a refinement study showed that indeed cannabis makes the young smoker and driver paranoid up to the point of not driving his/her car (thus: less accidents), and old smokers and drivers get better driving test and seems to make less accident.I am for legalizing marijuana, but I have a few questions: what does driving impaired on marijuana really mean? If someone smokes (or swallows in pill form) it every night to get to sleep he/she will have it in his/her system when he/she drives the next day. In fact, marijuana stays in a person's body for a long time, almost two weeks after the last usage. If a cop does a UA on such a person, will that person be arrested and/or get their license suspended if marijuana is found in their system? I don't think people should smoke while they drive, but how is anyone going to determine whether someone is smoking while driving unless they actually see the person smoke it in their car. I don't think it's fair to arrest someone or suspend their license if they simply have the marijuana in their system from smoking it during a time when they're not driving especially if they use it medicinally. These are issues that need to be ironed out. In addition, can people travel with marijuana in their car? If marijuana is considered a medication for some people, why can't they travel with it like it was any other medication? Again, no smoking in the car, but someone shouldn't get into trouble for simply traveling with it if marijuana is legalized or they use it medicinally. More issues to solve. Good luck!!
The idea that there is an issue here is basically an extrapolation from alcohol, which is indeed very dangerous for driving. Like cannabis, alcohol, slow down reflexes, but unlike cannabis, it makes the subject feeling the contrary. And so the simple offer of the choice between cannabis and alcohol would save a lot of people on the roads, and constituted a big harm reduction, very plausibly.