Goods Vehicles (7.5 tonnes+)
Built up area= 30mph
Single carriageway= 40mph
Dual Carriageway= 50mph
Motorway=60mph(but now limited to 56mph).
In addition, goods vehicles over 7.5 tonnes are required to be fitted with speed limiters which are set to permit maximum speeds of 60mph for vehicles between 7.5 and 12 tonnes, and 56mph for vehicles over 12 tonnes.
I don't see why vans should be banned from the third lane. It is after all, simply an overtaking lane, and not "the faster lane".
The van is carrying goods, and supplying the nations demand for products. Most cars have just one person in them. That is what creates the traffic problems.
Maybe the third lane should have a toll on it.