Tracks or footprints can represent:
The way someone got from one place to another—either literally or symbolically (as in the course of action that led to certain results)
Your life path or life journey, or a portion of it—past, present, or future
Evidence of someone's or something's presence or existence
Dirty tracks across a clean floor can represent messiness, recklessness, irresponsibility, disrespect, sabotage.