Yes, use this one. Although I'm not sure if it's the implementation or Waze itself, the police markings are only accurate 2/3 times. But the road hazards (tire debris, broke-down vehicle) are just about 98% accurate.
I tried it last night, didn't seem to work at all. I don't know if it is location sensitive as it had me zoomed into Mexico. I think that they need to partner with Tesla to get this to function properly in the the Model S/X.
This is a function of how waze works. In general, the "hidden" police markers are going to be more accurate because, by definition, they're probably parked somewhere looking for speeders whereas plain site police can be parked, driving, writing a ticket, or covering an accident.
It has been suggested that the more people that submit requests to TMC, the more likely that they will listen to owners about this. If you are interested in having this feature, please send your requests to [email protected].