Canadian here, family is originally from Bangladesh. I visit a grandparent every other year or so and this is my experience comparing the roads to give context to others who haven't seen it.
The congestion itself was pretty unbelievable. In a distance that would take maybe 20 minutes in Western cities took us 2 hours one time and on average it usually took about 1-1.5 hours. Logically it makes sense to just walk it, if the roads weren't literal death traps.
Sidewalks basically don't exist and neither do lanes. As soon as a car moves forward, all the cars behind try to zip into the spot, using every available space possible. The buses are completely scratched up and dented because they constantly grind against / bash into each other when moving and stopping. This is a constant risk to people forced to take transit. Literally the day after our uncle helped us to the airport he was nearly killed when the bus he was getting on slid into him.
For the streets that move faster there is the other side of the problems. The one time I ran to pick up medication for my grandparent was one of the few times in my life I was actually terrified for my life. I had to either cross a (approximately 4 lanes, 2 each way) street where traffic doesn't actually stop or walk half an hour just to get to a spot with a walking overpass thingy. You run across at the gaps and stop when cars to rush by. If it wasn't for my cousin physically pushing and pulling me along, I would guaranteed be dead. Decided to take the long ass walk on the way back.
What happens if someone is hit? Nothing. One time we were driving back around night time when our driver slowed down, moved to the side and went around something. Looking back (image still burned into my mind) it was a woman lying in the middle of the road. My parent saw it as well and asked to stop. The driver slowed and basically told us that if we were seen helping / tried to get help for them we would be taken in as the people who hit them. There had been enough cases of this so that the culture literally is to abandon anyone who gets hit. When my parent looked back at us and looked so defeated, not knowing what to do. Our driver also sounded distrubed but then continued onwards and we drove the rest of the way in silence.
I go back for a week or two every few years. This is the constant reality of the people who have to live there. Now when they try again to fix it, this happens.
Made a new account since I'm going back in the near future. My grandparent really isn't well and this might be the last chance we get to visit. I can't put my younger sibling and parent's lives at risk since from the stories/news articles I've seen, there is a decent risk even for international people who speak out and then visit the country. Even for full Canadian citizens, born, raised and now working in Canada, I don't want to take any risks.
. . .
Edit: I'll add more info later. To those that feel awful but don't know what to do, talk about what's happening. Share, ask questions. This is the kind of thing that will meet harsh punishments from international governments and groups but they need to know about it, that their people care about it. I'm not saying to "like and give thoughts and prayers". Be smart about it and you will have a big effect. Getting change and justice is difficult but I know people have it in them to do what needs to be done.