On 29/09/2010 00:26, Roy Badami wrote:
On 29/09/10 00:12, Ivor The Engine wrote:
In some
places, roads merge then separate but keep their numbering before and
after.

That happens here, too.

The difference is what happens during. In the UK, the common section
has the number of the most major road (only), leading the minor
road(s) to be discontinuous. In the US (and I think in many parts of
Europe?) the common section bears multiple designations.

-roy
While this is true, the road signs should show both numbers with the
"secondary" route in brackets to show that one can be reached by a turn
off the other. This is the general convention in the UK for all such
cases. A case I saw recently is near Colchester, where the A120 to /
from Harwich crosses the main A12. Both roads share the Colchester
by-pass and the road is shown as A12 (A120), with the first junction you
encounter with the A120 shown as A120 east or A120 west to help those on
the A12 know which one they need to turn at.

This is used for any situation where one road leads to another important
road. The main road which forms the south-eastern boundary of the New
Forest National Park is the A326. If you leave the New Forest on the
A35 from Lyndhurst, signs for the turn onto the A326 show A326 (M27)
(A36), indicating that you can use the A326 to reach the motorway or the
main road to Salisbury (A36).

But road re-numbering schemes can throw all this out. Can someone who
lives round that part of the world explain why if you look on Google
Maps for Sidmouth (I happen to be going there in a couple of weeks), the
road to it from Sidford is shown on the map display as the B3175, but in
the actual camera shots of the junction the road signs say "A375"?

--
- Yokel -

Yokel posts via a spam-trap account which is not read