I talked about it a couple of weeks ago, and there's been a typical example over the last two days in Knowledge Village and Media City.
Trucks carrying stones/gravel have obviously been overloaded, the loads not covered and, the evidence suggests, they were speeding around corners causing the load to pour over the sides of the trucks.
Here's part of the result:
Most of it had been cleared when I took the photo, poor guys risking their lives to work in the middle of the road sweeping and shovelling great piles of stones and sand to the side.
It meant that vehicles on it lost their roadholding, slipping sideways on the sand and stones as they negotiated the bends. Windscreens were obviously at risk as stones flew up from the wheels of the vehicle in front.
All of the actions which lead to this are illegal of course - but where is the enforcement of the laws?