I've noticed that in the "two come along at once" scenario, the second bus often...

quarterto on March 3, 2015 | parent | context | favorite | on: Wait ages for a bus and then two come along at onc...

I've noticed that in the "two come along at once" scenario, the second bus often leapfrogs the first, skipping a stop while the first bus picks up passengers. I've no intuitive idea whether this would smooth out the flow more than waiting behind the first bus though.