Creigiau Quarry

I understand that Tarmac Lafarge take no responsibility for the routes or behaviour (speeding etc) that the drivers take since the quarry merely has a contract with a haulage firm and therefore decline to accept responsibilty for any deviation from agreed speed limits or routes - See the Radyr / Morganstown soapbox website for instances
At no time has anyone considered that the average fixed axle tipper lorry is 3m in width thus physically preventing lorries from passing each other in opposite directions along both Pant-y-Gored Road (approx 4.5m wide) and the road leading from Pant-y-Gored Farm to the main A4119 which contains the recently strengthened (but not widened) railway bridge over the old British Rail passenger line
Can a lorry safely exit Pant-y-Gored Road to turn right towards the A4119 (fully laden) if there is traffic coming down from Pentyrch at the legal speed limit of 30MPH?
Where will the quarry provide wheel washing facilities at the exit from the quarry?
Where will the quarry provide the (statutory requirement of) offroad parking for lorries awaiting filling at peak times
Has an