in
In the past, yes. The law changed on January 1st 1997. At that time, the meaning of the bus symbol changed, meaning that even if local ordinances banned types of buses, then they would be unenforcable. This is with the exception of "local" restrictions, which must be indicated by the prescribed sign. The change was a very good thing, as it makes enforcement much more simple, and the rules much easier for bus-coach operators to understand and comply with. And more importantly, I can drive my minibus in them.
meaning?
"Local" is the main restriction allowed if the council want fewer than all buses using the lane.
From the legislation:
"local bus" means a public service vehicle used for the provision of a local service not being an excursion or tour;
"local service" has the meaning given in section 2 of the Transport Act 1985;
I haven't got the Transport Act 1985 to hand. But I think it is something along the lines of there being bus stops less than 15 miles apart and that pbuttengers pay their own fare, rather than being organised and payed for en mbutte as if the bus has been privately hired.
Christian.