Which of the following statements is true regarding vehicle safety?

Wearing a seatbelt significantly reduces the risk of injury during a crash. Studies and statistics consistently demonstrate that seatbelts are one of the most effective safety devices in vehicles. They help to keep occupants securely restrained, preventing them from being thrown from the vehicle and reducing the likelihood of suffering severe injuries in an accident. The use of seatbelts is supported by safety organizations and traffic laws, emphasizing their critical role in protecting lives on the road.

The other statements do not accurately reflect vehicle safety. For example, while vehicles do incorporate some rigid design elements, modern safety engineering focuses on crumple zones that absorb impact energy rather than relying solely on rigidity to protect occupants. Moreover, airbags are standard in most vehicles today, not just luxury models, as they are essential safety features designed to provide an additional layer of protection in collisions. Lastly, speed limits are crucial for safe driving; higher speeds can lead to more severe crashes and increased risks, making speed limits vital for reducing crash outcomes.