20 cars, 88 passengers, 5 bays. 80 seconds on the clock.
88 waiting
You have 80 seconds, starting at your first tap. A bump costs 3 seconds.
Call the cars to the stop in this order: 20, 9, 19, 2, 6, 14, 4, 16, 11, 3, 17, 8, 18, 12, 7, 15, 13, 10, 5, 1.