Wear a properly fitted bicycle helmet.

Wear proper clothing and shoes.

Adjust your bicycle to fit. 

Check your equipment (tires and brakes).

See and be seen.  Wear neon or other bright colors.  Wear something that reflects light.  Remember that just because you see a driver doesn't mean that they can see you.

Control your bicycle.

Watch for and AVOID road hazards.  Watch for potholes, broken glass, puddles, and dogs.  Remember that wet leaves can be a hazard also.  All of these can cause accidents.

Obey all traffic laws.  A bicycle is a vehicle and you are the driver.  Obey all traffic signs, signals and lane markings.

Watch for parked cars.

Look before turning.

Enter a street at a corner and not between parked cars.

Headphones are a NO-NO!  You won't be able to hear what's going on around you.

Wear clothing that is too loose.

Don't wear inappropriate shoes such as flip flops or high hills.

Don't wear dark clothing.