All my Vietnamese friends complain how much worse the traffic has gotten in the last few years & are surprised when I say I think it has gotten better. I'm willing to grant that Hanoi traffic is chaotic, but when I first came to Hanoi there were perhaps half-a-dozen traffic lights in the whole metropolis. Now there are lights at virtually every major intersection. It's true that they sometimes have burned out bulbs, but they're there and drivers take at least some notice of them. I'd say compliance runs about 80%. That is, when the light goes read, about 80% of the oncoming traffic stops, with the other 20% racing through as the traffic from the other direction begins to move. Pedestrians must take nothing for granted. Most of the traffic is still motorbikes, though there are many more cars than when I first began coming to Hanoi & the general rule is that the bigger the vehicle the less likely it is to stop for a light. Oh, and all the drivers are talking on a cell phone. Still, the lights give pedestrians an opening they did not have in the past. For one thing, once the front row of traffic stops (which can take some time in its ragged compliance) the traffic behind is blocked, leaving the way (mostly) clear. For the most part, people don't go fast, but move mostly with the flow of traffic. I've been here almost three weeks, walking the city every day, and I've seen only one accident.