Is it time to start calling out bad cyclists?

^^^ & ^^ - there are documented* cases where removing street markings (signs / lines / markings / central reservations) completely has a positive effect on safety (measured in a reduction in accidents). Countries that have switched from driving on God's side of the road to the filthy right side of the road have also experienced such reductions.

This has been noted to be only a temporary outcome, with accident rates rising again as road users adapt.

• By documented, I mean that I read it somewhere, once upon a time, and therefore speak with the confidence of absolute authority on the subject.
  
  

Drachten and Makkinga in the Netherlands are two famous examples.