【Scenario】Two aircraft are facing each other at the head of a runway. A solution is required.

Today while playing, I didn't have time to check the route. There's only one entrance/exit. I only noticed when Plane A was about to enter the curve—Plane B couldn't get out, and Plane A couldn't get in either. The two planes were about to get stuck facing each other. I hope this can be optimized to allow for some error tolerance.