Where the hell did these guys get their licence from ??
How can you have seven lanes of traffic in a three (sometimes two) lane road ?? I don't know but it somehow works here. Three of those lanes will generally be the tuk-tuks. And...that doesn't take into account people walking on the road, pushing trolleys or anything else for that matter.
Somehow....it just seems to flow. The "magic arm" helps too: this is arm hanging out the window of whatever vehicle, that indicates "I'm going this way...do not hit me".
Don't even get me started on roundabouts: they truly are a free-for-all.
Saying that, however, I can see method to the madness. No-one seems to drive faster than 50 kph. Any faster & you can't anticipate what the 20 million other cars on the road are going to do.