EVERY TURN STAYS OPEN
The arrow already checked the next three exits.
Route lives where lanes split and sensible plans expire. It takes the bright fork, ignores the closed ramp, and arrives before the argument about directions begins. At every junction, the arrow keeps one lane for shortcuts, one for scenic mistakes, and one for anyone pretending they meant to turn there. Nothing is lost. It has simply selected a more interesting entrance.
Six things the junction has agreed to remember.
No lane wasted.