Be Alcohol and Drug Free
Alcohol and drugs, including some prescribed medications, negatively affect your judgment, coordination, balance, throttle control, and ability to shift gears.
These substances also impair your alertness and reduce your reaction time. Even when you're fully alert, it's impossible to predict what other vehicles or pedestrians are going to do.
Therefore, make sure you are alcohol and drug free when you get on your motorcycle. Otherwise, you'll be heading for trouble.