18 cars, 74 passengers, 5 bays. 70 seconds on the clock.
74 waiting
You have 70 seconds, starting at your first tap. A bump costs 3 seconds.
Call the cars to the stop in this order: 17, 16, 3, 18, 4, 15, 1, 2, 10, 14, 6, 8, 9, 13, 5, 7, 11, 12.