RatanDS - I'm assuming you meant escalators, not elevators. The elevators in CC are glass capsule type and enclosed.

Regarding safety in design, you will find that here in M.E. it's all about appearance, looks and show. Safety, practicality and ergonomics take a back seat.

Next time you are in India try the Garuda mall in Bangalore. It's no different, really high escalators going up all the way up. Last time I was there, they had some Russian circus trapeze artists performing, so there was netting installed. I thought it would be better if they left it as a permanent installation. LOL!