[kbrackbill]

I don't know where you're referring to specifically, but a common thing I've seen is that cities will make some set of roads bikeable (usually roads they were repaving/redesigning anyway) but they're not really connected in a sensible way. It makes biking on the improved roads nicer, but most practical trips will still involve other roads which might be more dangerous, scary, or difficult.

[hot_gril]

I'm thinking of downtown San Jose, CA, where they do seem to have a full network of bike lanes often totally separated by cones, but maybe I'm wrong.

[kgabis]

Having looked at those bike lanes with streetview it appears most of them are simply painted and don't provide any physical separation from traffic. Also, this: https://www.google.com/maps/@37.3428225,-121.8868874,3a,75y,...

[hot_gril]

Huh, maybe they took them out. And yeah that's the classic, those blocked lanes were a constant danger when I used to bike to work.