![]() Most doors will signify that they are unlocked and open with lights, this gives guide to those who are going up or down the door steps to not trip and fall. #Nova lfs artic freeway express driver#Most doors on buses use air-assist technology, the driver controlled doors, use air pressure to force them open, patron-operated doors, can push them open, however, the doors are heavy, so the touch-to-open or push bar mechanism, sends pressurized air to open the doors.
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