In Moscow the trains are 50m below ground at their subways - grande stations too - chandeliers marble pillars - tile mosaics - like palaces. But the travellators are so long and they move at about jogging pace. The locals know to stand to the LHS to allow runners by. Also they know to use every step for standing on the travellator. Seven to ten travellators wide full of people tavelling at speed - they move millions per day very effectively.
If some tourist dope were to stop anywhere along the path of these moving masses - trampled for sure - now theres a cure using Darwin philosophy.