Metro Police Brakpan

Metro Police in Brakpan have "roadblocks" on a regular basis which includes Station Road and Prince George Avenue. The metro vehicles are parked out of sight so as to decrease police visibility. I have seen on quite a few occasions, at night, how officers run into the road from nowhere to stop unexpecting motorists. Many times vehicles had to dangerously swerve out of their lanes to prevent hitting a car breaking unexpectedly. Worsening the matter is that these roads are major taxi routes, and they are notorious for their bad driving. This could potentialy lead to serious accidents as visibility is zero and motorists are not made aware to slow down. Surely the safety of road users should be prioritised by law enforcement personnel?