I've written many times complaining about the traffic congestion in Jeddah. This city is very long and narrow, running for miles and miles along the Red Sea Coast, yet not stretching very wide across. Many of the streets are blocked off with pylons like this, making right turns, left turns, or U-turns impossible. Roads are blocked everywhere all over Jeddah. Traffic flows fairly well north to south, but the problems arise when you need to turn left or turn around. Vehicles are forced to go miles and miles beyond where they need to go in order to make a left turn or a U-turn. This means that cars are on the roads creating more traffic congestion than is necessary. It wastes everyone's time and gas.
Traffic flow continues to be a major problem for the residents of Jeddah. I have never seen such flawed thought and poor planning of roadways in any city I have ever seen.