Reminds me of a subway station in Beijing. It's one of the more popular ones, an exchange between major lines, and once people exit the train they need to go do

Reminds me of a subway station in Beijing. It's one of the more popular ones, an exchange between major lines, and once people exit the train they need to go down stairs to get to the other platform. Just in front of the stairs is an enormous shoulder-height roadblock, ostentatiously there to prevent the mass from just shoving people down the stairs. Oddly, though, it also makes the traffic just breeze through that part of the station. People near the obstruction form nice orderly lines and, knowing that it's totally useless to try to push by, keep them. Later down the stairs there's a 90 degree turn and immediately the crowd slows down again