It is important to have read this post to understand some of the things I will describe:
Swinging Like a Monkey
The double-decker buses have narrow, steep, circular stairways that go up and down. I had a friend with me and we were sitting on the top deck of the bus. Unfortunately, I realized we needed to get off the bus at the next stop. There is ideal timing for ascent and descent of the steps and they should be between the major lurches (Stop Lurch and Start Lurch). I started down the stairs in the Start Lurch where the bus has just spit out passengers and the driver basically stomps on the gas to get back into traffic. One thing I did do (learned the hard way) before I go down the stairs, is adjust my two bags so the straps are firmly on my shoulder and tightly clutched under my arms. I also employed my Four Point Death Grip going down. The stairs face backward on the bus and this is what posed the problem for me because I started down the steps just as the bus was heaving forward. My feet came off the steps and I was basically swinging like a monkey from the railings until the bus settled into it's driving rhythm and my feet swung back to the stairs.