This guide is for general information only and is not legal advice. Laws change — verify current rules with your state DOT or a licensed attorney before relying on this for any legal matter. Read full disclaimer.
The rule
Bicycles are prohibited on Interstate highways in Maryland. Bicycles are prohibited on Maryland Interstate highways and on other controlled-access highways designated by the State Highway Administration. The Capital Beltway (I-495/I-95), I-70, I-83, and I-97 are all closed to bicycles. Conventional US and state routes (US-1, US-40, MD-355) remain open.
What this means in practice
Stick to surface streets, US routes, state highways, and dedicated paths. If your route in Maryland appears to use an Interstate, plan a detour before you start.