Motorcycle helmets come in a variety of colors, styles, and certifications. Although they do not prevent all head or brain injuries, compliant helmets worn properly that are well cared for can help to prevent head trauma and minimize the severity of traumatic brain injuries in the event of a crash.
Veteran motorcyclists usually know that helmets that have never been involved in a crash should be replaced every 3-5 years. If a rider is in a crash or drops their helmet when not in use, the helmet should be retired and replaced with a new one.
When stopping at different destinations during a ride, motorcyclists either leave their helmet on the handlebars, the bike seat, locked to the bike, or they take it with them and prop it on a restaurant table or chair. All of these situations pose a risk that the helmet could drop - thus damaging the effectiveness of the helmet. Even if the helmet visibly looks unscathed, a drop could damage the interior padding and materials that are in place to help absorb shock during a collision.
A company near Asheville, North Carolina developed Helmet Halo. Self-described as "the world's first portable motorcycle holder," the product is intended to offer riders a secure alternative for storing their helmet in between rides. The pocket-sized device is a compact circular thermo plastic urethane that can be shaped to fit for storage needs, and then re-shaped to serve as a cradle for a helmet.
Under current law, North Carolina requires all motorcycle riders as well as moped and scooter riders to wear helmets that are certified by the Department of Transportation. (Look for a DOT certification stamp on the back of the helmet.) The law also applies to passengers.