Are hotel entrance and exit barrier-free ramps mandatory?

Yes.

Any business unit must have a green channel.

Actually, this is true, and it is closely related to each of us. I'm not talking about fantasy or nonsense. The "width of life" is the width of a 4-meter fire lane. Don't underestimate the 4-meter width. Whenever a fire breaks out, firefighters always drive a pair of strong "red rabbit horses" and rush to the battlefield singing high-spirited war songs. Fire trucks often have to travel thousands of meters through streets and alleys, and whether they can reach the battlefield in time during the critical rescue time is a question.