Colouring the pavements

Studio Gelardi, a sustainable product design and engineering firm based in New York, USA, invented an interesting tool for developing bicycle communities last year. The “Contrail” is a concept bicycle device that you can fix above the wheel of your bike and that covers the bicycle wheel with a coloured layer of chalk.

The purpose is to provide a better feeling of safety and community to bikers by leaving a mark on the road. Using this device, bicyclists leave a coloured track behind them, allowing other bikers to see where is safe to ride. More bikers taking the same trail, stronger the route will appear on the road – reminding cyclists and also cars drivers that the street is a place shared by different users.


  1. lauren muffen
    Posted 28 April, 2010 at 03:15 | Permalink

    AMAZING!! Where can i get one in?

  2. Camilla
    Posted 28 May, 2010 at 09:52 | Permalink

    I second that

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