No signs, forget how to drive?

Why is it in Joburg that the "Keep left, Pass right" signs are gone people have forgoten how to drive? People sit in the right lane doing 15km under the speed limit, and no, the white line in the middle are not pointing you to your destination. You dont have to ride on top of them. If you cant direct you car in a straight line without the help of the lines on the road, why the hell are you driving. The last time I checked the emergency lane was not a taxi lane. 90% of Joburgers need to lean how to drive again. Lets Face It: KEEP LEFT, PASS RIGHT, it's very simple concept.