What about luggage in trains in Vietnam?
You can carry your luggage onto the cars and keep it above you or on special racks or underneath your seat. Some travelers secure their bags to the rack with a bicycle lock.
There is no hard limit to the amount of baggage you can bring on the train and you may be surprised by the amount that some Vietnamese families will take with them but be reasonable. Boarding and disembarking from the train can be quite rushed and hectic and unlike other countries, there are no carts and no one to help you with your luggage.