How much more likely is a crash if a driver is traveling 15 mph over the speed limit, according to an ATRI study?

Answer: B — 67%

The correct answer indicates that a driver traveling 15 mph over the speed limit is 67% more likely to be involved in a crash, based on findings from the American Transportation Research Institute (ATRI). This statistic underscores the significant impact that exceeding the speed limit has on driving safety. The relationship between speed and crash likelihood is well-documented; as speed increases, the ability to react to unexpected hazards decreases, and the severity of any potential crashes also rises. Being aware of this percentage is crucial for drivers, as it highlights the importance of adhering to posted speed limits not only to comply with laws but also to enhance overall road safety for themselves and others. The higher likelihood suggested by the study stems from factors such as reduced braking distance and longer stopping times, which can lead to increased risk in emergency situations. Understanding this data helps emphasize the necessity for safe driving practices and the consideration of speed limits as a preventative measure against collisions.