It has been a couple of years since I was in Delhi, and there is no way I would commute there. I believe that the pollution has been cleaned up some with the banning of diesel vechiles there, but at the time I had black stuff running out of my nose, and was blowing it clear every 1/2 hour. It was also 40 degrees C (100 F).
In the video, the traffic isnt as heavy as it can be in Delhi, but if you look you will see that there are rules, just not the same as in the west. It has to do with mass. A big bus or truck wins, and the smaller guys give way. But as the smaller ones bank up, waiting to cross, they eventually aquire sufficient combined mass to cross the other stream.
The same applies to motorbikes, and pedestrians. If you want to cross a busy street you just wait until there are enough people and they start to walk. You just join them. Scary at first, but you do get used to it, sort of.
I have seen small children in busier traffic than that in Phnom Phen and Bangkok on the way to and from school on bikes, but dont remember them from Delhi.
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