During the first year of the 55 mph limit, traffic fatalities decreased by what percentage?

The correct answer is 16.8%. This statistic is significant as it highlights the impact of implementing the 55 mph speed limit on traffic safety. During the first year after the speed limit was introduced, a notable decrease in traffic fatalities was observed, making a strong case for the effectiveness of speed regulation in reducing accidents and saving lives.

The percentage reflects a broader trend seen in traffic safety studies, where speed limits are shown to contribute to lower fatality rates due to reduced impact forces in collisions and the increased ability of drivers to react to unexpected situations. This kind of data is essential for policymakers when considering the benefits of traffic laws aimed at protecting public safety.