passengers squeeze tightly together as more people push into the already full train car. Every seat is occupied and people stand shoulder to shoulder in the aisles. The doors struggle to close as additional commuters try to fit inside the cramped space. Passengers hold their bags above their heads and press against each other with no room to move. Some people look uncomfortable while others patiently wait as the train remains completely filled. a space that is completely packed with people and has no available room.