Maryland Route 178 is a state highway in the U.S. state of Maryland. Known as Generals Highway, the highway runs 8.06 miles (12.97 km) from MD 450 in Parole north to Veterans Highway near Millersville. MD 178 connects Annapolis with Crownsville in central Anne Arundel County. The highway is indirectly named for George Washington, who traveled the highway in 1783 on his way to Annapolis to resign his commission in the Continental Army at the conclusion of the American Revolutionary War. MD 178 was planned as early as 1910 as part of a western route between Baltimore and Annapolis. However, most of the highway south of MD 3 was not built until the early 1930s. The portion south of MD 3 served as a primary segment in the western corridor connecting Baltimore–Annapolis, until the construction of Interstate 97 (I-97) in the late 1980s.

Maryland Route 179 is a state highway in the U.S. state of Maryland. Known for most of its length as St. Margarets Road, the highway runs 3.16 miles (5.09 km) from MD 648 near Annapolis east to the end of state maintenance in Cape St. Claire. MD 179 serves a suburban area near the southern end of the Broadneck Peninsula of northeastern Anne Arundel County. The state highway was paved in the 1920s from its western end to Skidmore near Sandy Point. MD 179 was truncated at what is now U.S. Route 50 /US 301 when their predecessor highway replaced the stretch to Skidmore in the early 1940s. MD 179 was extended into Cape St. Claire in the early 1990s.