Studies show that when motorcycles have their headlights turned on during the day:

The best way to help other drivers see your motorcycle is to keep your headlight on whenever you ride. During the day, a motorcycle with its headlight on is twice as likely to be noticed.

• They are not as easy to see as other vehicles.
• They are more visible to other drivers than when their headlights are turned off.
• Other drivers are often confused.
• They are less safe than when their headlights are turned off.