Related Clues:

• Tracks
• Tracks in mud
• They're hard to get out of
• Road grooves
• Sticking points?
• Dead-end jobs, e.g.
• Furrows
• Where wheels roll
• Tiresome routines
• Same-old-same-olds
• Tire grooves
• Monotonous routines
• Dirt road features
• Tire tracks
• Chuckholes