page_title: Bicycle lighting
section_title: Halogen lights
hierarchical_section_title: Bicycle lighting / Front lighting / Halogen lights
caption_attribution_description: English: A bicycle with a headlight made of chrome
context_page_description: Bicycle lighting is illumination attached to bicycles whose purpose above all is, along with reflectors, to improve the visibility of the bicycle and its rider to other road users under circumstances of poor ambient illumination. A secondary purpose is to illuminate reflective materials such as cat's eyes and traffic signs. A third purpose may be to illuminate the roadway so that the rider can see the way ahead. Serving the latter purposes require much more luminous flux and thus more power.
  Many jurisdictions require one or more bicycle lights to be fitted to bicycles ridden at night — generally a white light in the front and a red light at the back, like with other vehicles.
context_section_description: Although these lights were originally designed for off-road use, where they are almost universal,  rechargeable halogen lights became popular with commuter cyclists.
  The lights used by most halogen rechargeable systems are cheap, bright but fairly simple: they project a cone of light (wide and narrow beam options are available) which is good for off-road use but not ideal for road use as it can dazzle oncoming road users. This is why rechargeable halogen lights do not meet legal requirements in some jurisdictions.
  Many systems use standard commercial prefocused optics, making a wide range of power and beam width combinations available.  Most systems allow simultaneous connection of different lamps - for example, a wide and a narrow beam for off-road riding, or a high- and a low-power beam for road riding.
caption: A bicycle with a chrome-plated headlight as a styling cue reminiscent to chopper motorcycles.
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