roads like that tend to have natural speed inhibitors, such as bends and junctions. also have traffic coming the other way. That tends to slow people down a lot. whereas a dual carriageway is like a speed magnet. I can see where you are coming from, but there is good reason. I do agree though that for some motorists are a cash cow.
100 yards of road we're talking about marked at NSL. Dead straight downhill. It's bonkers that when the 690 was reduced to 50 the stretch from the Mill r/a to east rainton wasnt moved to 30.
