18 cars, 84 passengers, 5 bays. 75 seconds on the clock.
84 waiting
You have 75 seconds, starting at your first tap. A bump costs 3 seconds.
Call the cars to the stop in this order: 3, 16, 18, 17, 14, 11, 12, 13, 8, 5, 6, 4, 2, 1, 7, 9, 15, 10.