Roads with curbs:
the gutter is not part of the “roadway,” i.e., not “ordinarily used for vehicular travel"
[§316.003(42)]. Cyclists need to keep clear of the gutter
area; pavement joints, drain grates or debris can cause
steering difficulties or damage. On lower-speed curbed
streets, parallel parking of vehicles adjacent to the curb
is commonly allowed.
A cyclist riding past a parallel-parked car should
maintain clearance of 4 feet to avoid risk of collision with an opening driver-side door.
Roads with flush shoulders
: where no bicycle lane
is marked, a white edge line is typically marked to
indicate the edge of the roadway; any pavement to the
right of the edge line is shoulder pavement, not a bicy-
cle lane unless it is marked with the bicycle lane symbol.
Since the definition of "roadway" excludes shoulders,
cyclists are not required to ride on paved shoulders that
are not marked as bicycle lanes, although they may
prefer to do so. A cyclist who rides on a paved shoulder
typically needs to maintain 2 feet of clearance from the
pavement edge. The cyclist should still travel on the right
because (1) this reduces crash risk at intersections and
driveways (drivers don’t expect traffic on shoulders to
approach from the “wrong” direction) and (2) whenever
the cyclist enters the roadway (e.g., to pass a pedestrian
or other cyclist, cross an intersection, keep clear of a
vehicle approaching to enter the roadway at a driveway,
avoid debris or obstructions, etc.), right-side operation