In Vientiane traffic is diabolical. Time wise it is not to bad getting around but roads are very busy. Construction traffic, cars, tuktuks, and heaps of motorbikes make driving an adventure.
Rush hours are mornings as people head to work and kids on motorbikes head to school. Same in afternoons.
Parking is hard to find and often around the bigger international schools parents will double park when waiting to pick up their children.
In spite of this I find Lao drivers do not have the aggression of westerners.
One needs to relax and accept the status quo.