In three years, the number of deaths caused by guns in America is expected to exceed the number of traffic fatalities for the first time in modern U.S. history.

The number of shooting deaths is expected to rise to 32,929 in 2015, according to a 10-year average based on Centers for Disease Control Data. By contrast, the number of traffic deaths is expected to continue its fall and decline to 32,036 thanks to advances in safety technology.

By contrast, "we've made policy decisions that have had the impact of making the widest array of firearms available to the widest array of people under the widest array of conditions," Garen Wintemute, a professor at the University of California-Davis, tells Bloomberg, which compiled the data.

The number of annual traffic fatalities in America peaked in 1979, with more than 53,524 Americans killed on the road. The 10-year average has fallen since.

Gun deaths peaked at 37,666 in 1993, declined to 28,393 in 2000, and have gradually increased over the past decade, according to the Bloomberg data.