Brill Idea of the Day: Bicycle Contrails

For those of us who live where bike paths leave something to be desired, how about this for an ingenious idea. Chalk (or gypsum) contrails.


“A few bicyclists ride with contrail a couple times per week –> faint lines on the road inspire curiosity and remind bikers where it’s safe to ride –> new bikers are encouraged to ride and use contrail –> contrail lines get brighter as community grows.”

Studio Gelardi, via Treehugger

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