I would recommend getting in touch with cubbe8, who is doing the Boston/Cambridge bike path mapping. I believe they are following the "North American conventions" from the OSM wiki [link below]. However, many of these bike lanes are already tagged as part of highway features, so perhaps Ride with GPS is getting conflicting or duplicate queues. (Not sure how it resolves.)

Personally, I find these OSM conventions underspecified, so have avoided mapping bike lanes. Massachusetts has a lot of different bike lane treatments, so it would be good to get some local consensus on this!

https://wiki.openstreetmap.org/wiki/Key:cycleway#Dedicated_bicycle_lanes

