What is a sign of proper motorcycle maintenance?

The proper functioning of all lights and signals on a motorcycle is an essential aspect of maintaining safety on the road. When all lights and signals operate correctly, it ensures visibility and communication with other road users, which is vital for safe riding. This indicates that the electrical system is functioning properly and that the rider has taken the necessary steps to ensure the bike is roadworthy.

In contrast, not feeling any vibration may not necessarily indicate proper maintenance, as motorcycles can vibrate under normal operating conditions. Visible damage or wear on tires is a clear sign of neglect, as this can lead to safety hazards. Lastly, neglecting to check the oil level can lead to significant engine issues, reflecting poor maintenance practices. Thus, the correct answer emphasizes the importance of operational safety features as a clear sign of proper motorcycle maintenance.