Always wear bright clothing, such as yellow or fluorescent colors (days) and retro-reflective materials (nights).
At an intersection or driveway avoid being alongside a vehicle, which could suddenly turn right.
At an intersection or driveway watch for vehicles that could turn left into your path When riding on a sidewalk or bike path, watch for cars entering/exiting driveways, and always yield the right of way to pedestrians. Give an audible signal when passing a pedestrian. Avoid riding on a sidewalk in a commercial area.
Be aware of pedestrians and other vehicles. Learn to anticipate their actions.
Be aware of potential hazards like trash, potholes, gravel and storm grates, opening car doors.
Carry parcels in a backpack, bike rack, basket, or trailer.
Check behind you before changing lanes (mirrors make it easier, but look back as well).
Do not wear headphones while riding a bicycle.
If you must ride at night or low light, always use both a front and rear light and reflector.
Keep your bicycle locked when not in use.
Keep your brakes in good working order. Be able to stop in 15 feet at 10 miles per hour.
Look left-right-left for a safe gap in traffic when entering the road or crossing an intersection.
Normally ride single file, never more than 2 side by side (do not impede traffic when riding side by side).
Obey all traffic laws, signs, and signals.
Ride on the right side of the road with traffic.
Signal your moves to other vehicle operators, by pointing in the direction you are going to turn.