The 2015 Bike Master Plan comprehensively maps out bike routes in every neighborhood in Baltimore. It's a robust guiding document for bicycling in Baltimore, but it lacks specificity in two areas: facility selection and prioritization of implementation.

Recognizing these faults, Baltimore City Department of Transportation has drafted an addendum to the 2015 Bike Master Plan, the Baltimore City Separated Bike Lane Network.

Like our neighbors in the DC region, the addendum begins by mapping the level of "traffic stress" on each of Baltimore's streets, and then identifies a network of protected lanes and supporting bicycle facilities, like bike boulevards, to connect to existing facilities and existing "low-stress" streets.

A "low-stress" street is far more likely to be used by people identified as "interested but concerned" bicycle riders. For example, only about 38% of "interested but concerned" bicycle riders would use a standard bike lane, but that number grows to 80% if protected bike lanes are present or if the street is slow, calm, and has a neighborhood feel.