Conventional bike lanes are dedicated on-street facilities for cyclists and micro-mobility users. These lanes are adjacent to the vehicle travel lanes and are marked with solid white stripes. Cyclists travel in the same direction as motor vehicle traffic. Conventional bike lanes are typically placed to the right of motor vehicle traffic, between the vehicle travel lane and the curb (or parking), but occasionally may be placed on the left side of the road on a one-way street.
Cyclists and micro-mobility users are permitted to use any roadway except limited access highways. Shared lane markings, commonly called sharrows, are reminders to motorists that bicyclists are allowed to use the full travel lane just like motor vehicle traffic. The markings for a sharrow include a bicycle and two chevrons above the bicycle. Under Massachusetts law, drivers must wait until it is clear to pass a cyclist and provide a safe passing distance of at least 4 feet.
Buffered bike lanes are bike lanes with a painted buffer between the bike lane and the vehicle travel lane. Buffers are typically marked with two white lines and diagonal or chevron markings between the two lines.
Parking protected bike lanes are similar to buffered bike lanes, except they are separated from motor vehicle travel lanes with a parking lane. In these cases, the buffer is created between the parking space and the bike lane. It sometimes includes bollards or planters to add extra separation between the parking lane and the bike lane.
These bike lanes are typically separated, or protected, from motor vehicle travel lanes with physical elements such as bollards, planters, concrete curbs, etc. and from pedestrians on the sidewalk. These facilities can be designed for one-way or two-way travel, depending on the right of way width.
Shared Use Paths are sidewalk-level biking facilities that are shared with pedestrians. These facilities are adjacent to vehicle travel lanes, without placing cyclists and micro-mobility users directly on the street. Shared Use Paths may also be bidirectional, allowing cyclists to travel in both directions. Cyclists using shared used paths must remain alert to pedestrians and other cyclists.