1, The staircase seems much more steeper than those new buses,
would it be much more dangerous to passengers with compare to the origional design?
I don't think that it is wise to make it "staight".
2, The modification for people to escape seems not very useful as seldom tourists are good at sport climb.:L
3, The exhaust pipe may save pedestrians from a "burst" of black smoke, but may cause someone to get burnt.:'(
plz feel free to dicuss:D
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