Halfwitted?

Road signs and markings are supposed to be easy to understand and interpret. A lot of clever people have put a lot of time and effort into making them so, not least Messrs Anderson and Warboys. What might they have thought about this confection on Sir Bobby Robson Way, Newcastle upon Tyne?

Halfwittery

Olde Graveller is not one for complaining, as his pals (?) will testify, but … And our taxes pay these people?