Some clarity - there is a difference between a JMPD and a SAPS roadblock.
JMPD only ever check for expired license or outstanding fines (fines are a waste of their & our time, with COJ being on AARTO it means JMPD have zero authority regarding outstanding fines, so anyone who pays at one of these mobile revenue collection centres is an idiot). I will, without fail, warn people about these every single time. They serve no purpose other than revenue generation.
The same goes for JMPD speed traps. The supposed purpose of speed traps is to force people to slow down on dangerous sections of road where there is a high likelihood of serious accidents taking place. All locations have to be approved by the prosecuting authority. Another joke - ever seen them trapping in a dangerous place? Me neither. Take the dip over the river between Lonehill & Leeukop prison. Narrow road, not in great condition, no safe verge, 80km/h zone on a steep downhill. Numerous accidents, many fatalities. Never seen a single speed trap there. R55 south woodmead by world of golf. 80km/h zone, wide, newly surfaced 4 lane dual carriageway with clear verges on both sides. Trap there weekly.
Bunch of cnuts.
SAPS roadblocks are welcome, as they actually (well, mostly) check for criminals, stolen vehicles, illegal firearms & drunk drivers. I never warn anyone about those.