[OSM-talk] Red and green routes

[Simon Hewison]

Richard Fairhurst wrote:
> Primary routes are those A roads which are signed in green, including  
> trunk routes. These are marked in green on most maps. See http:// 
> www.highwaycode.gov.uk/signs06.htm for citation.
> 
> 'Secondary' A-roads are those which are signed in black/white. These  
> are marked in red on most maps. FWIW I believe these are strictly  
> called non-primary, but secondary follows logically on from primary  
> and seems a logical shorthand.
> 
> For B-roads and minor/unclassified we agree on the colouring.

To add further to the confusion, there are "Red routes" in cities like 
London, which are maintained by the Regional assembly (e.g. Transport for 
London) rather than the local borough councils. These are also marked as 
green on Ordnance Survey maps. They have fiercely enforced waiting 
restrictions, marked with red lines on the road (enforced by real Police 
traffic wardens - whose job it is to keep traffic flowing freely, rather 
than the usual parking attendants - whose job it is to rake in money from 
parking fees).

Within London, I've been using highway=trunk to denote these "Red Routes", 
since these are also deemed to be of strategic importance.

-- 
Simon Hewison