Which of the following is true about speed limits on highways?

The statement that higher speeds contribute to more deaths and more severe injuries is accurate and reflects a fundamental principle of roadway safety. Research consistently shows that as vehicle speeds increase, the severity of accidents also rises. This is due to several factors, including the greater distance needed to stop a vehicle and the increased force of impact in a collision. Driver reaction times may also be affected by higher speeds, leading to a greater likelihood of loss of control and fatal accidents.

Understanding the implications of higher speeds on safety is vital for all drivers. It reinforces the importance of adhering to posted speed limits, which are set to enhance safety based on the specific conditions of each highway segment. This principle informs driver education programs and traffic regulations aimed at reducing accident rates and fatalities on the road.

In contrast, while vehicles should ideally maintain safe following distances and appropriate speeds under varying conditions, the requirement for a constant speed is impractical given variable traffic conditions and roadway environments. Speed limits serve as legally enforceable parameters rather than merely guidelines for drivers to consider, ensuring compliance with safety standards across different types of vehicles. It’s worth noting that not all trucks are mandated to travel slower than passenger vehicles; speed regulations can vary by type and weight class of the vehicle and may be influenced by local statutes