Bicycle safety is the use of road traffic safety practices to reduce risk associated with cycling. Risk can be defined as the number of incidents occurring for a given amount of cycling. Some of this subject matter is hotly debated: for example, which types of cycling environment or cycling infrastructure is safest for cyclists. The merits of obeying the traffic laws and using bicycle lighting at night are less controversial. Wearing a bicycle helmet may reduce the chance of head injury in the event of a crash.
Incident where a cyclist was hit by a car
Segregated cycling along a Fietspad in Amsterdam, safe by avoiding conflict with traffic.
Hazardous slots in storm drain
Bicyclists demonstrating a safe overtaking distance with the use of pool noodles as safety wings.
Traffic comprises pedestrians, vehicles, ridden or herded animals, trains, and other conveyances that use public ways (roads/sidewalks) for travel and transportation.
Crossing from Fort Lee, Bergen County, New Jersey, into Manhattan in heavy automobile traffic on the George Washington Bridge, the world's busiest motor vehicle bridge, transporting approximately 300,000 cars and trucks daily across the Hudson River.
Traffic in Brazil
Congestion in St. Louis, Missouri, early 20th century
Traffic controller on Michigan Avenue in Chicago, Illinois