By how much did the rate of fatal truck crashes drop between 2006 and 2014?

Answer: C — 21%

The correct response reflects a significant reduction in the rate of fatal truck crashes during the specified period, indicating a 21% decrease from 2006 to 2014. This drop highlights improvements in safety measures, practices, regulations, and possibly vehicle technology that contributed to making roadways safer for both truck drivers and other road users. Such improvements can include better training for drivers, advancements in vehicle safety features, more stringent regulations regarding hours of service, and enhanced road infrastructure. The 21% figure showcases a compelling trend in reducing fatal incidents, emphasizing the importance of continued efforts in traffic safety within the trucking industry. Understanding this decrease is crucial for industry stakeholders, policymakers, and safety advocates as they work towards further reductions in fatal crash rates.