I've always wondered in what field President Mahmoud Ahmadinejad has his Ph.D. Maybe you did, too. In any case, an article in Saturday's Guardian tells us that he received his doctorate in traffic management. It also tells us that traffic is a terrible mess in Tehran. (In which big city is it not?)
In Tehran the problems are multiple, including simply poor driving mores, disrespect for rules, dilapidated cars, et cetera. Pedestrians add to the chaos. Maybe Ahmadinejad will devout his energy to this pedestrian matter and leave the world alone.