In a high-speed collision, occupant restraint systems and roadway hardware are typically:

• A. Unchanged
• B. Reduced/ineffective
• C. More robust
• D. Overwhelmed

Answer: (B)

In high-speed crashes the energy involved is far greater than what safety features are designed to absorb. Restraint systems like seat belts and airbags, along with roadway hardware such as barriers and crash cushions, are built to perform within certain crash energy ranges. When speed is very high, the forces exceed those design limits, so these systems can be stretched, damaged, or overwhelmed, and their ability to restrain occupants or protect the vehicle’s structure is reduced. That’s why, in typical high-speed collisions, occupant restraint systems and roadway hardware are reduced in effectiveness. They aren’t usually unchanged or more robust at such speeds.