If a vehicle has been stationary for more than 5 min, they can not edit (add or remove) police, mobile speed traps etc. (Here in Victoria Australia) we've recently had parked police or mobile speed traps remove the marked position off the map they keep the waze app open and when a passing motorists marks it as police sighted they remove it by saying its no longer there.
Nomi
If a vehicle has been stationary for more than 5 min, they can not edit (add or remove) police, mobile speed traps etc. (Here in Victoria Australia) we've recently had parked police or mobile speed traps remove the marked position off the map they keep the waze app open and when a passing motorists marks it as police sighted they remove it by saying its no longer there.