Not really. The second hand takes 58.5 second to move the entire circle at constant speed if I recall correctly. Then it stops for 1.5 seconds before it starts

Not really. The second hand takes 58.5 second to move the entire circle at constant speed if I recall correctly. Then it stops for 1.5 seconds before it starts moving again. During that 1.5 second pause you close the doors of the trains. So it is more a method of synching the closing of the doors with the clock rather than actually gaining any time.