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In more developed areas, there are three options. Fast (main road for cars), medium (bike lane) and slow (sidewalks). I'd imagine birds would ride in the medium and slow lanes. They go up to 15 MPH, which is the run-speed of a human. Should runners be on the bike lane? I don't think so.

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> In more developed areas, there are three options. Fast (main road for cars), medium (bike lane) and slow (sidewalks). I'd imagine birds would ride in the medium and slow lanes.

And to be clear 'bike lane' != road shoulder with a bike painted on it. A bike lane should have at least some amount of separation from the road in the same way that sidewalks are separated.

I'm hopeful that the popularity of scooters speeds up the adoption of medium speed lanes.

runners have a much better stopping speed than bicycles, and also don't have sharp metal or carbon fiber frames that can hurt pedestrians :)

Also 15 mph is a sub 4:20 mile, and for most people will be pretty close to a flat out sprint. Not super adviseable on sidewalks either. Most joggers will be going half that speed.

walking, 3mph

running at an 9 min mile 6.5mph

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