What are the solutions to traffic congestion in Vietnam's biggest cities?

"There is too much traffic for the size of the roads. Plus people don't wait for traffic lights to change, then you get a pile up because people block everywhere."
smithadrian1969

"Singapore has made a car purchase license very expensive and capped every year. Until Vietnam's infrastructure catches up this should be considered. Four day work weeks and alternative start and stop work times should also be considered."
b.arett69

"Not only do daily working hours need spacing out, the massively overlong national holidays are contributing to a inefficient stop/go economy where the hare loses the race to future prosperity."
Wilson Muir

"Literally just restrict the size of vehicles. No one needs a large SUV in HCMC or Hanoi, and these types of vehicles contribute the most to gridlock while wasting the most space."
Savagemindshow

"When you expand a road, all you do is creating a bottleneck elsewhere. It’s never ending, never enough. The only solution is increasing public transport (especially metro) and limit the vehicles during certain times/certain areas. As it is done elsewhere in the world. For HCMC this would especially mean cars."
petes_ch

"Only solution is a metro/public transit system. Hopefully in a couple decades we will have metro line #2."
Mcbmghome