What is one function of the chin strap in terms of helmet safety?

The chin strap plays a crucial role in helmet safety by ensuring that the helmet remains securely fastened to the rider's head during use. In the event of an accident or sudden movement, a properly secured helmet is essential for protecting the head from injury. If the helmet were to come loose or fall off due to lacking a secure chin strap, its protective benefits would be significantly compromised, potentially leading to serious consequences.

While comfort, ventilation, and weight considerations are important for overall helmet design and user experience, they do not directly contribute to the primary safety function of the chin strap. Therefore, the main purpose of the chin strap in the context of helmet safety is to ensure a snug fit that keeps the helmet in place when it’s needed most.