Related Clues:

• Certain numbered hwy.
• Short map line?
• Wee way
• No. on a map
• I-80, for one
• Highlighted line on a map: Abbr.
• Road atlas abbr., perhaps
• Part of R.R.: Abbr.
• MapQuest request, for short
• I-5, e.g.
• GPS reading
• Bus driver's assignment: Abbr.
• 66 is a well-known one (Abbr.)
• Itinerary info: Abbr.
• Road sign no.