DIY Bike Route  Contrail_main00.jpgA photo simulation of
Contrail in action. Image: Jessi Pervola and Studio Gelardi.
Ever wonder which paths cyclists naturally take through a city?
Not satisfied with the location or extent of designated bike
lanes? Feel like other street users are quick to dismiss the
presence of cyclists?   Contrail leaves an impression based on
the cumulative movements of many cyclists over time (a more
lasting variation on the BYO bike lane concept employed by the
laser-projected LightLane). Its provocative visual language lies
somewhere between sky calligraphy, temporary street graffiti,
and overlapping footprints in the snow.  Gelardi and Herrmann
proposed Contrail for the Power to the Pedal competition, and
are currently developing a prototype. They envision "a new cycle
of biking participation" in which the criss-crossing chalk
ribbons would pique curiosity, identify more popular routes, and
inspire more cyclists to hit the road.