[Talk-GB] trunk roads

[Abigail Brady]

On 3/27/07, SteveC <steve at asklater.com> wrote:
> The Phillips map I have seems to show trunk roads the same as A roads.
> We show them fundamentally different. Why is that?

Bear in mind that the set of government-recognised "trunk roads" is
NOT the same set of roads which are signed green and appear green on
maps.  The latter are called "primary routes", forming the "primary
route network", and are designated by the government to link important
destinations, following whatever A roads they consider appropriate.
These can be trunk roads, in that they are maintained by central
government, or not; they can be trunk roads in the sense they are
dualled, or not.  Basically, any A-road can be a primary route, and
thus will be signed and appear green on a map.  This has nothing to do
with trunk status.

A table (badly spaced, I know, blame googlemail)

  highway      colour      actual legal status of this colour

  motorway   blue         motorway
  trunk           green       primary route
  primary       red          non-primary A-road
  secondary  orange    B-road

-- 
Abi