When drivers in Connecticut pass a motor vehicle crash, one of the first thoughts that come to mind is the cause of the crash. Business Insider reports that lane departure contributes to the most deaths caused by traffic accidents. Next in line is failing to yield the right of way.

During the study cited by Business Insider, researchers found that rural areas suffered most from drunk driving. Researchers believe that the lack of adequate access to public transportation was to blame for this. The sole exception was Utah, because of a large population of Mormons and strict liquor laws. Rural areas also proved more deadly for speeding, because sparsely spread out police officers could not adequately monitor full stretches of open road.

One surprising find is that rain killed more people than snow. However, in the Midwest, the snow became more deadly. Driving in the fog in coastal and southern states also posed a more dangerous risk to drivers than snow. That said, sleet proved to be a more dangerous obstacle for drivers to overcome safely than crosswinds.

In spite of all this, CNBC reports that traffic deaths are decreasing slowly. In 2017, traffic deaths experienced a 1% decline. This may not seem like much at first, but consider that for the two prior years, traffic deaths were on the rise. Note that traffic deaths involving pedestrians and cyclists did not decline. Experts believe that distracted driving and higher speed limits balanced out many of the benefits drivers could receive from high-tech safety features now built into cars.

New York surprises everyone by having one of the sharpest declines in the past two years. New York saw a 15% decline in traffic-related deaths after adding bike lines, lowering speed limits and adding more shelters for pedestrians. These are exemplary moves that more states may want to consider implementing.