Then Moscow was planned by a fortress designer. Here's our live congestion map http://maps.yandex.ru/?ll=37.617671%2C55.755768&spn=1.290894%2C0.614126&z=10&l=map%2Ctrf&trfm=cur
Note that huge areas inside the big circle have no tracked roads inside them. That's because there aren't any big roads there - only backyards of apartment buildings, narrow driveways with cars parked on the curb and other stuff of that sort. So, both the enemy tanks and, you know, the people who live here for decades have to use the that "web" choke point layout to get anywhere besides a grocery. Oh, and the possible ways to widen those roads are now gone, because the space reserved for that ages ago was sold to shopping malls and offices.