Sad, regardless of the at-fault person, or shared fault. I have been on group rides, that went along paved MUPs as part of the route, and found myself wanting to opt for the busy parallel public street, rather that deal with dog leashes and strollers, and whole families walking abreast, on the MUP. I see these paved trails as a place to ride at a virtual waking pace, not a way to move along efficiently. It does, of course, save my feet, with their problems caused by walking and running, that are mitigated by riding.
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Have Colt, will travel...