Sharing the Road with Other Users
Pedestrians and bicyclists
Yield to pedestrians in a crosswalk, marked or unmarked, and never pass a vehicle stopped at a crosswalk - someone may be crossing in front of it. Bicycles are vehicles: they ride with traffic, obey signals, and belong on the roadway. Maryland requires at least three feet of clearance when you pass a bicyclist, and if you cannot give that space, wait until you can. Check for riders before opening a door into a parking lane.
Motorcycles and mopeds
Motorcycles are entitled to a full lane. Never share a lane with one, and give extra following distance because motorcycles can stop faster than cars and are easy to lose in blind spots.
Large trucks and buses
Tractor-trailers have large no-zones behind, beside, and in front of the cab. If you cannot see the driver's face in the mirror, the driver cannot see you. Never pass a truck on the right when it is turning - trucks swing wide left to make a right turn, and the gap they leave is a trap, not an invitation. Give buses room when they pull out of stops.
Emergency vehicles, work zones, trains
Pull to the right and stop for an approaching emergency vehicle with lights and siren; if you are in an intersection, clear it first. Slow down and obey flaggers in work zones, where fines double. At railroad crossings, never stop on the tracks; if gates come down, stay put and drive through them rather than be trapped.
Rule of thumb: if you cannot see the truck driver's mirrors, assume the driver cannot see you and get out of the no-zone.