@jdanielp I agree, the symbols helped a lot. The current trouble seems to coincide with the festivals - groups of people all chatting as they walk down the cycle lane, or families with lots of young children scampering about the cycle lane, or large groups of people walking through from George Square onto the MMW cycle path then stopping dead as they debate where to go next. I suppose their heads are so full of Festival Fun that they don't notice the symbols.
All minor problems. I put up with it patiently for a couple of weeks but that was enough.
It doesn't help that the University Festival Fun Park has opened up what's normally an emergency exit door that gives straight onto the MMW cycle path, so that customers can get to its old medical quad bar/venue more quickly.