Where did you find "motor road" in the links and what purpose would this road type have? I believe the current types (motorway, trunk, primary, secondary, tertiary, unclassified, residential) are sufficient already.

If you didn't click the link to the OSM Wiki page, please do. osm.wiki/HK:Hong_Kong_tagging#.E8.A1.97.E9.81.93.E5.88.86.E9.A1.9E_Classifications_of_streets

I forgot to mention the roads with the (M) suffix – these are parts of A roads which are classified by the government as having motorway standard. In any case, Hong Kong has a different system to the UK.

see changeset/36839404

OSM Wiki page: osm.wiki/HK:Hong_Kong_tagging#.E8.A1.97.E9.81.93.E5.88.86.E9.A1.9E_Classifications_of_streets

Per tagging convention, in Hong Kong, if a road is not classified as an expressway by the Government of Hong Kong and not part of a tunnel area, it cannot be tagged as a motorway (highway=motorway).

Any part of the Hong Kong Strategic Route and Exit Number System which is not classified as an expressway is tagged as a trunk road (highway=trunk).

For comparison, only M roads (e.g. M25) in the United Kingdom are tagged as highway=motorway and only A roads are tagged as highway=trunk.

All other important roads in both the UK and Hong Kong, regardless of if they are controlled-access roads or have sixteen lanes or whatever, are tagged as primary roads (highway=primary).

I know you have only been an editor for a week, but you have made a very large change to what has been the tagging convention for the last several years without any discussion.

Since it would take a lot of work for me to put the tags back together myself, I have emailed [email protected] and asked them to revert your classification changes, per discussion at https://help.openstreetmap.org/questions/47773/problems-with-mass-retagging-and-others.

OSM Wiki page: osm.wiki/HK:Hong_Kong_tagging#.E8.A1.97.E9.81.93.E5.88.86.E9.A1.9E_Classifications_of_streets

Generally, expressways in Hong Kong are distinguished by green destination signs and kilometre markings. Most of them are part of the route system, but two (Penny's Bay Highway and Sha Lek Road) are not.

Tunnels and tunnel areas are also tagged as highway=motorway. (In my nearly three years here I have yet to find out why, but I digress.)

Please don't re-tag trunk routes not classified as highways (i.e. with green signs), or not in tunnel areas, as motorways (highway=motorway). These roads should be tagged as trunk roads (highway=trunk).

Please stop retagging trunk roads as highway=motorway. If a road doesn't have the green highway signs then it should be tagged as highway=trunk (or highway=trunk_link for ramps/slip roads and Penny's Bay Highway), and if it doesn't have a route number then it should be tagged as highway=primary (except Sha Lek Road and Penny's Bay Highway).

Why did you delete these?

The Airport Express is separate from the rest of the MTR system in fare system and high speed, and is therefore tagged as a main line (railway=rail). The Tung Chung Line tracks, on the other hand, are tagged as a metro line (railway=subway).

Only the parts which are marked by signage as tunnel areas should be tagged as highway=motorway.

This road is not even part of the route system (i.e. routes 1–5 and 7–10) and should not be tagged as a motorway.

Like Prince Edward Road East, even if a road is constructed similarly to a highway, it should not be tagged as "highway=motorway" unless it is part of the route system and has green signage (except for Sha Lek Road).

Like Prince Edward Road East, even if a road is constructed similarly to a highway, it should not be tagged as "highway=motorway" unless it is part of the route system and has green signage (except for Sha Lek Road).

Like Prince Edward Road East, even if a road is constructed similarly to a highway, it should not be tagged as "highway=motorway" unless it is part of the route system and has green signage (except for Sha Lek Road). Airport Road is not part of Route 8 and does not have green expressway signage.

Like Prince Edward Road East, even if a road is constructed similarly to a highway, it should not be tagged as "highway=motorway" unless it is part of the route system and has green signage (except for Sha Lek Road). Ma On Shan Road is not part of Route 2 and should therefore be tagged as a primary road (highway=primary).

The East Rail Line is, like the West Rail Line, a metro line (railway=subway). The Intercity services, on the other hand, are main line trains (railway=rail). Since the spur line is not served by main line trains it is tagged as railway=subway.

Ching Cheung Road, while part of Route 7, is not classified as an expressway/motorway (highway=motorway) and should be tagged as a trunk road (highway=trunk), like Princess Margaret Road.

osm.wiki/HK:Hong_Kong_tagging#.E8.A1.97.E9.81.93.E5.88.86.E9.A1.9E_Classifications_of_streets

(Tunnels and tunnel areas are also tagged as highway=motorway.)