What gear is essential for a passenger riding on a motorcycle legally in Idaho?

In Idaho, it is legally required for all motorcycle passengers to wear a DOT-approved helmet while riding. This regulation is established to enhance safety, as helmets significantly reduce the risk of head injuries in the event of an accident. The Department of Transportation (DOT) sets standards for helmets, ensuring that they meet safety criteria for impact resistance and other performance measures. This requirement applies to all motorcycle riders and passengers, emphasizing the importance of head protection on the road.

The other options, while they may contribute in various ways to rider safety and comfort, do not serve as legal requirements. For instance, a shoulder harness is not applicable to motorcycles, as they do not typically come equipped with such safety features. A reflective vest or extra gloves, though beneficial for visibility and comfort, are not mandated by law for passengers. Thus, wearing a DOT-approved helmet remains the crucial legal requirement for motorcycle passengers in Idaho.