> Part of the trouble is that street markings do not reflect car traffic or other special circumstances. I absolutely agree. I bike almost daily in Brooklyn, a

> Part of the trouble is that street markings do not reflect car traffic or other special circumstances. I absolutely agree. I bike almost daily in Brooklyn, and the information I glean from maps like this (or the official NYC bike map) is only a small part of what I consider when selecting a route. Having experience with the nature of car and truck traffic in a given neighborhood is an order of magnitude more valuable than information about bike lanes. Cyclist safety is a tough issue. From an infrastructure perspective, creating safe bike lanes is a hell of a lot more difficult than simply painting lines on a street. I wonder what ways tech can help cyclists make safe choices beyond maps.