I've driven high a gang of times. I think that you should be alright if you are a heavy smoker because after a while you become almost immuned to it. When I first started smoking, I couldn't drive straight even if my life depended on it. Another factor that contributes to how you drive while high is how long you've been driving while sober. If you feel comfortable driving and you've been driving for a while I'm pretty sure you can keep control of the wheel while mildly high. If you're baked but u've been driving stoned for a while you should be able to handle it. Notice: SHOULD