UCHANU: the bus

I take the bus a lot here--at least 6 times per week--and there are a few things that have really caught my attention.
First of all, you have to run to get on the bus--even if you're standing right in front of the door. If you don't, there's a good chance it will leave without you. Over the last few months I've seen several people get caught in the doors of the bus. Also, you have to rush to get out of the bus before the doors close, and I have definitely missed my stop before because I was too slow in elbowing and pushing my way past people to make sure I got out. From what I've heard, it seems that the reason for this is that bus drivers have a monetary incentive to get through their route faster than is possible to do so if they waited longer at stops.
Another thing that really strikes me about Hanoi buses is the safety features. Almost all of the safety information is in English, but some is in Vietnamese. Even more confusingly, some is in English that appears to be translated imperfectly from another language. Also, while one of the stickers says to break the window with a hammer in an emergency, I've never seen a hammer anywhere on the bus...Noticing all these things really makes me want to learn more about 1) how the bus system is managed, and 2) where the buses are produced and how safety precautions are managed (if at all). I'm sure that the answers to these questions would show some interesting things about the development and management of public transit in Vietnam. To be honest, it's just surprising and frustrating to me that the government can organize and clean up so much for the 1000 year celebration, yet buses don't even have stickers with important safety information in Vietnamese. It seems to me that here, in contrast to more "developed" countries like the U.S., everyone knows that you really have to be alert and watch out for yourself all the time--when driving, walking, eating, etc. You can't assume that laws and regulations ("the man"?) will protect and take care of you.
However, there's one thing I really love about the buses in Hanoi, which is that the passengers are usually really nice. People will often strike up conversations with me, and one time a girl went way out of her way to help me when I was lost. Just the other day a guy offered me his seat, and when I politely said I was fine, he gestured to my huge (heavy) backpack and insisted that I take his seat. I recognize that I'm probably getting special treatment as a foreigner, but it's still nice to have these friendly interactions with people.
Ultimately, I really want to learn more about the bus system in Vietnam. Hopefully my Vietnamese will eventually be good enough to allow me to pursue the answers to my questions and learn more about this topic.