“Contrail is a tool for developing bicycle communities. As you ride, contrail leaves a faint chalk line behind your bike. The goal is to encourage a new cycle of biking participation by allowing the biking community to leave a unique mark on the road and to reclaim this crucial shared space.

The old cycle: More cars on the road –> more percieved danger for bikers –> fewer bikers on road –> even more cars on the road.

The new cycle: 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”.