Contrail is a fanastic device that is attached above the back wheel of the bike covering it with a layer of chalk, turning your bike into a giant crayon on wheels. Visually the city streets will come to life with colourful lines by uniting commuters mapping out their daily path.

Designed by Pepin Galardi of Studio Gelardi ‘the idea of safety in numbers’

By using this device, bicyclists will have a clearer path on which to ride safely and out of the way of vehicular traffic. At the same time, as more bicyclists using the Contrail go over a line created by a cyclist before them, the line gets brighter allowing drivers to clearly see a marked bike path where there might be none. It’s sort of similar to what happens when a dirt path appears in a grassy field after lots of people have taken the same shortcut over a period of time.

http://gelardi.com/portfolio/contrail/