>>1164153Double-deckers have longer dwell times because there are less doors, and people need to take extra time to navigate the stairs when alighting (usually because they need to step over the derros and bogans who sit on them).
They're also pretty bad on the airport line because there's almost no room for luggage, especially in peak hour.
They're great for long distance travel and seating capacity, though. And I admire how unique they make Sydney rail network compared to the rest of the world, for better or worse.
