Yes, it is perfectly acceptable and highly recommended to wear a motorcycle helmet while riding a bicycle. In fact, wearing any type of helmet that is designed for impact protection is better than riding without one. The primary purpose of a helmet is to protect your head from potential injuries in the event of a fall or collision.
While motorcycle helmets are specifically designed to meet the safety requirements of motorcycling, they provide excellent protection for cycling as well. They typically offer a greater coverage area and better impact absorption capabilities compared to traditional bicycle helmets.
It's important to note that bicycle helmets are specifically designed for cycling and may be lighter and more aerodynamic than motorcycle helmets. However, wearing a motorcycle helmet while cycling is still a valid and safe option.
Regardless of the type of helmet you choose, make sure it fits properly, covers your head adequately, and is certified by a recognized safety standard organization. Prioritizing safety by wearing any helmet is a wise decision when engaging in activities that carry a risk of head injuries, such as cycling.