A cycle reflector is a safety device, usually made of plastic, designed to increase a bicycle's visibility, especially at night, by reflecting light back to its source. They are typically positioned on the wheels, pedals, front, and rear of the bike, and utilize retroreflection to bounce light from headlights back towards the driver. While reflectors enhance visibility, they are not a substitute for active lighting like headlights and taillights, especially in low-light or variable conditions.
Here's a more detailed breakdown:
Function:
Reflectors work by retroreflection, meaning they redirect light back to its source, making the bicycle visible to drivers with headlights.
Location:
Reflectors are commonly found on the wheels (spokes), front (usually white), rear (usually red), and pedals.
Material:
Reflectors are typically made of molded plastic tiles with a smooth front surface and a prism or bead-coated back.
Importance:
Reflectors are crucial for safety, especially in low-light conditions, but should be used in conjunction with active lighting.
Limitations:
Reflectors only work when a light source (like headlights) is present. They may not be effective in all conditions, such as when the light source is at an unfavorable angle according to a cycling website.
Legal Requirements:
Some regions require specific reflectors on bicycles, such as a red rear reflector, and sometimes a white front reflector.
Effectiveness:
Wheel reflectors, in particular, are effective at showing the bike's movement and presence in the dark.