Related Clues:

• Road atlas abbr., perhaps
• Part of R.R.: Abbr.
• MapQuest request, for short
• I-5, e.g.
• GPS reading
• Bus driver's assignment: Abbr.
• Preset path
• 66 is a well-known one (Abbr.)
• Itinerary info: Abbr.
• Numbered highway
• US 1, for one
• Road sign no.
• Hwy., e.g.
• Way to get there
• No. in a travel guide