Is it safe to travel when the train is crowded?

Yes, it is safe. Safety is very important to us, and we do nothing to compromise safety. The fact that there are more passengers than there are seats is not a safety risk in itself. Nor is the fact that it is cramped to stand. The trains can have at least as many standing passengers as seated passengers, and this does not affect the braking system, carrying capacity or evacuation in an emergency.