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    CYCLISTS WITH DAYTIME BICYCLE LIGHTS HAVE 32% FEWER ACCIDENTS!

    Permanent light on bicycles reduces accidents significantly

    The Municipality of Odense (Denmark) conducted a large-scale trial in cooperation with Aalborg University where 2000 cyclists had daylight running light fitted on their bicycles. The project has shown that the cyclists with daytime running light have 32% fewer accidents than the control group.

    Background & Objectives

    In Denmark cars have been required to have daylight running lights since 1990 and this have proven to reduce accidents involving cars. Based on this knowledge, it was obvious to consider if the same results could be achieved for cyclists as well.

    Implementation

    The bicycle lights (which were provided by Reelight) operates without batteries and because of this, they are turned on permanently. The self-powered bike lights are fastened to the hub of the wheels and two magnets are fastened to the spokes. When the magnets passes by the bike light, power is generated without any friction. The bike light gives a good light anytime, day as well as night. The project were projected to show whether the daylight running lights would ensure the safety of the cyclist.

    Furthermore the lights have other advantages:

    • you will never forget to bring the bike lights as they are permanently mounted to the bicycle
    • since they have no batteries, you will never run out of power
    • you don't produce waste in terms of old batteries

    Odense Municipality conducted a large-scale trial in cooperation with Aalborg University where 2000 cyclists had permanent lights fitted on their bicycles.

    For one year, the group continuously reported any traffic incidents at a website. These data were compared to corresponding data from a control group of 2000 cyclists with traditional bicycle lights which were only in use when it was tusk and/or dark.   

    The study showed that the cyclists with daytime bicycle lights have 32% fewer accidents than the control group. The effect is particularly noticeable during the summer season when the reduction is up to 40%.

    Conclusions

    Riding on darker roads?

    The study showed that the cyclists with daytime bicycle lights have 32% fewer accidents than the control group. The effect is particularly noticeable during the summer season when the reduction is up to 40%.98% of the cyclists expressed satisfaction with the lights used and 60% felt safer than before they used the lights.

    The results are so remarkable that it generated a debate on a possible change of the Danish rules for lights on bicycles. For example, it could be considered whether new bicycles should be sold with permanently fitted lights and that they are, of course, used during the daylight hours.

    98% of the cyclists expressed satisfaction with the lights used and 60% felt safer than before they used the lights.

    Now, 10 years after the test was concluded, the manufacturer has sold more than 100,000 set of lights.