[OSM-newbies] Secondary vs tertiary roads

[Gregory Williams]

I used to live near there. I'd classify most of those roads as tertiary. As a rule of thumb minor roads generally >= 4M wide are tertiary and minor roads generally narrower are unclassified.

Gregory

From: newbies-bounces at openstreetmap.org [mailto:newbies-bounces at openstreetmap.org] On Behalf Of Richard Endersby
Sent: 7 August 2007 17:55
To: Newbies at openstreetmap.org
Subject: [OSM-newbies] Secondary vs tertiary roads

Hi 
 
I'm preparing to do some mapping and to fill in some gaps in the minor road network in mid bedofrdshire (UK) (http://www.informationfreeway.org/?lat=52.03892808416901&lon=-0.32186501209207824&zoom=13&layers=B000F000) - an area I know fairly well. On looking at the map I saw that quite a few of the roads are tagged as secondary even though they are what I would call minor roads with no road classification (ie not A, B or C roads). I've been tagging such roads as tertiary or unclassified up until now
 
Two questions 
 
1 I assume that this highway=secondary refers to 'B' roads in the UK. Is that correct? Anything that is not a B road should be tagged with something else?
2 Is there any protocol in changing another author's work as far as the tags are concerned?
 
Thanks
Richard