(a) (1) On any roadway that is divided into two or more clearly marked lanes for vehicular traffic, the following rules, in addition to any others consistent with them apply.
(2) Subsections (c) and (d) of this section do not apply to police officers in the performance of their official duties.
(b) (1) This subsection does not apply to motorcycles operated two abreast in a single lane.
(2) Every motorcycle is entitled to the full use of a lane, and a motor vehicle may not be driven in any manner that deprives any motorcycle of the full use of a lane.
(c) The operator of a motorcycle may not overtake and pass in the same lane occupied by the vehicle being overtaken.
(d) A person may not operate a motorcycle between lanes of traffic or between adjacent lines or rows of vehicles.
(e) Motorcycles may not be operated more than two abreast in a single lane.
Structure Maryland Statutes
Title 21 - Vehicle Laws -- Rules of the Road
Subtitle 13 - Operation of Motorcycles
Section 21-1301 - Traffic Laws Apply to Persons Operating Motorcycles
Section 21-1302 - Riding on Motorcycles
Section 21-1303 - Operating on Laned Roadways
Section 21-1303.1 - Restrictions; Requirements
Section 21-1304 - Clinging to Other Vehicles
Section 21-1305 - Footrests and Handlebars
Section 21-1306 - Equipment for Riders -- Motorcycles
Section 21-1306.1 - Equipment for Riders -- Mopeds and Motor Scooters