Cardiff - North Rd lane lights - no more?

[Ken Figenus]

They installed these lane divider catseye type lights in red/green on the three lane stretch from city centre to the Aston garage-ish. Having seen some near missed due to numpties using a lane that was actually closed to them I though it was a fabulous idea that improved safety - especially for those less familiar with the lane controls. They seem to be off and unused for ages now - anyone know why?