One of the leading causes of cycling accidents is wrong-way riding. Here's why it's so dangerous and why you should always ride in the same direction as traffic:1. Expectations Motorists expect to find other traffic on the right side of the road At intersections, motorists look where they expect traffic Motorists assume that you can see lights and signs that dictate traffic behavior 2. Laws In all 50 states, the laws require that you ride on the right, with the flow of traffic Disobeying traffic control devices in any direction is illegal Even on one-way streets where you can ride on either side, go with traffic 3. Turning Making a turn requires a wrong-way cyclist to cross twice as much traffic for turns Cyclists must be able to see traffic control devices at intersections Turning motorists aren't looking for traffic traveling in the wrong direction 4. Closing speed Riding 20mph into a car going 35mph is like hitting a wall at 55mph Motorists overtake wrong-way cyclists much faster The likelihood of surviving such a crash is low 5. Traffic control devices Traffic lights are impossible to read from the wrong side If you don't know where traffic is going, you increase your chance of getting hit Not obeying traffic controls destroys order on the roadwayTip courtesy of the League of American Bicyclists (bikeleague.org).