Related Clues:

• Urban transport
• Sometimes it's not taken
• It can be in a line at the airport
• Map line, sometimes
• Artery
• Frost's 'The ___ Not Taken'
• "Abbey" or "Tobacco"
• Driver's place
• Truck's passenger area
• One for the road?
• Truck part
• Pike, e.g.
• Semi section
• Abbey or Tobacco
• Hack's wheels