Road User Behavior

A speeding-related collision is defined as one in which a driver is racing, driving too fast for the conditions, or driving in excess of the posted speed limit. In the United States, speeding has been involved in nearly one-third of all fatal crashes for more than twenty years and is a leading contributing factor in traffic collisions. Speeding reduces a driver’s ability to steer safely around curves or objects, reduces the amount of time a driver has to react to a dangerous situation, and extends safe stopping distances. Nationwide there were 10,111 people killed in speeding-related...

In 2016, there were 5,286 motorcycle riders killed on public roadways in the United States, a 5.1 percent increase from 2015. Motorcyclists are at greater risk of injury during collisions—in 2016, motorcyclists were 28 times more likely than passenger car occupants to be fatally injured in a traffic collision, per vehicle miles traveled. In 2016 only 65.3 percent of U.S. motorcyclists wore helmets. In states with universal helmet laws requiring all riders to wear helmets, the known helmet use rate among fatally injured motorcyclists ranged from 66 percent to 100 percent in 2016, while in...

In 2016, there were 34,439 fatal crashes and countless more injury crashes in the United States. Increased coordination between first responders, hospitals, and other traffic safety stakeholders, along with better-quality Emergency Medical Services (EMS) data collection, would enhance planning efforts to improve first responder time to collisions. In emergency medicine, practitioners have a “golden hour,” sometimes less, following traumatic injury wherein prompt medical attention offers the highest chance to prevent death. Thus, improved timeliness and technologies, proximity to care, and...