Related Clues:

• They all lead to Rome, briefly
• Cartography lines: Abbr.
• Ways to go: Abbr.
• Map lines: Abbr.
• Hwy. turnoffs
• Fork providers?: Abbr.
• Some people pass on them: Abbr.
• Interstate syst.
• Expys.
• Routes: Abbr.
• Aves., sts., etc.
• Ave. intersectors
• Map abbrs.
• Some map abbreviations
• Transp. network