Avoid road hazards. Watch for parallel slat sewer grates, slippery manhole covers, oily pavement, gravel and ice. Cross railroad tracks carefully at right angles. Focus on riding. Always be aware of surrounding activities.
Cycling requires full-time concentration.
In Washington, it is illegal as well as very unsafe to wear headphones while riding a bicycle. Watch for cars pulling out. Make eye contact with drivers. Assume they don't see you until you are sure they do. Look ahead for opening car doors.