Which of the following is considered a common safety feature in vehicles?

The seatbelt is indeed considered a fundamental safety feature in vehicles. Seatbelts are designed to securely restrain passengers in their seats during a collision or sudden stop, significantly reducing the risk of injury or ejection from the vehicle. They work by distributing the forces of a crash across the stronger parts of the occupant’s body, essentially preventing movement during impact.

While child restraint systems and airbags also play critical roles in enhancing vehicle safety, the seatbelt is universally required in all vehicles and is integral to the basic design of automobile safety. Child locks serve a different purpose, focusing on preventing rear seat passengers (often children) from opening doors while the vehicle is in motion, rather than providing protection during crashes. Thus, seatbelts maintain a primary position in the hierarchy of vehicle safety features.