A portion of the roadway designated by striping, pavement markings, and, if used, signage, for the preferential or exclusive use of bicyclists. It carries bicyclists in the same direction as adjacent motor vehicle traffic. Bike lanes must be a minimum of 4 feet wide, but are at least 5 feet in most locations.
A buffer zone augments an existing, dedicated bike lane that creates more space between the bike lane and the adjacent vehicle travel lane. The buffer zone is flush with the pavement and is at least 2 feet in width. Buffered bike lanes increase the perceived riding comfort for bicyclists as they increase separation from vehicle traffic and/or parked vehicles.
See the complete plan on the 2017 Projects list