>many minutes A bus can easily carry 50 passengers. 30 seconds times that many is 25 minutes. That's a lot of aggregate time wasted indeed. Also assuming this

>many minutes A bus can easily carry 50 passengers. 30 seconds times that many is 25 minutes. That's a lot of aggregate time wasted indeed. Also assuming this 30 seconds delay is not compensated later, it can influence significantly more people than the bus capacity. And if someone misses a connection because of it that's even more time wasted.