Related Clues:

• Rds
• Map abbrs.
• See 29-Down
• Hill and Sesame (Abbr.)
• A, B and C in D.C.
• Manhattan's east/west arteries: Abbr.
• They support traffic
• Byways
• Travel ways
• Map lines
• All of them lead to Rome, they say
• E and G, e.g., in D.C.
• Fork options
• Elm and Peachtree: Abbr.
• Some ave. crossers