Coming from a civilised driving country, the driving here is madness.
I, myself, have experienced the 1 inch from bumper flashing thing, while in the middle of overtaking and maintaining the speed limit. Not only is this really bad driving standard, but likely to cause accidents, and a sign of road rage. I'm sure the local religion has a need to abide by laws of the land, speed limits on roads are included in that.
People driving excessively slow in the middle and left lanes are also a huge issue. The CORRECT designation of lanes are: right lane for driving, additional lanes to left are for overtaking (none are called "fast lane"!)
The other serious issue is the turning left when in a lane for going straight on, just wait in the queue and everyone will get there alive and in a reasonable time.
A sign of a good driver is someone who can look beyond their own bonnet and judge appropriate road position, speed, and acceleration/braking for the conditions they have in front of them. It is far far more efficient, and comfortable to progressively slow the car approaching busy intersections, or roundabouts, when it is obvious you will be required to stop.
All I'll say is 90% of people here would be banned from the roads in my home country for failing to drive correctly, but I feel its more the lack of comprehension of risks while driving (kids not buckled up in back too!), and the relatively short time that the automobile has existed in this region, some reflection, and advice from more experienced people, would probably solve the problem