Related Clues:

• Precious opening?
• Prefix for final
• Load mover
• Freeway rig
• Interstate rig
• Jackknifing victim?
• Formal intro?
• Trailer hitch?
• Consciousness starter?
• Highway rumbler
• It lets you see who's calling
• I-80 hauler
• Circle's beginning?
• Conductor's beginning?
• Weigh station waiter