Fun fact: double deckers take a longer time to load up, because that staircase is a choke point. That's why now there are 3 door buses with 2 stairs. But 3 door buses are longer and not all roads are suitable. If you use a double decker as a feeder bus, not everyone would want to go up, so the lower deck is packed like sardine but upper deck
. 42 17 175 456 234 405 151 421