Those basic safe driving techniques are based on ideal conditions. Take the three second lead for example, that’s on dry roads with good visibility. You wouldn’t follow that close if it was icy, because now your reaction time is not going to be enough, you have less control over the road so you must increase your follow distance.

Driving drunk is the same, your reaction time is now slower so again three seconds isn’t enough. You don’t have the same control over your body and alertness, so you need to drive even slower and more cautiously.

Now you’re the odd one out. Your overly cautious driving will confuse the people driving around you because it’ll be less predictable and odd. They’ll try to pass you causing the chance of accidents to increase.

This is long winded, but the point is you simply aren’t at your prime when you’re driving impared. Be it high, drunk, sleep deprived, etc, you shouldn’t on the road in that state as you increase the risk for everyone else. I urge you to reconsoder before you hurt yourself or someone else.