[Talk-ca] Route reference tagging: time for change?

[Jherome Miguel]

I’ve been considering a major change to the way we tag highway ref= values,
trying to follow the lead with our neighbours stateside.
Currently practice has been to use bare route numbers except in Manitoba,
where the number is preceded by PTH, PR or Route depending on type of
route; for the data user’s end, the rendered shield is generally dependent
on the tagged classification of the road (mostly tied to the road’s
official classification by the provincial or territorial transportation
ministry), the province or territory, and the network tag in the route’s
relation.

The proposal for route numbers is, by type of road:
- For provincial and territorial highways, add province/territory postal
abbreviation before number (e.g. AB 2 for Alberta Highway 2, ON 401 for
Ontario Highway 401, BC 5 for BC Highway 5, NS 101 for Nova Scotia Highway
5), except perhaps Manitoba provincial highways (can keep ref=* with PTH
for provincial trunk highways including the Trans-Canada and the
Yellowhead, and PR for provincial roads). This includes routes with special
shields different from provincial or territorial towns standard designs
(e.g. the TransCan, BC Highway 5 as the South Yellowhead, the Mackenzie
Highway). The QEW will remain as it is. For highways forming the TransCan,
it can be tagged as a second ref= value, as TCH.
- For Ontario regional and county roads, add CR or RR before number
depending on the type of municipality the road is in.
- For Toronto expressways (the Gardiner, the Allen, the DVP), there will be
no changes.
- For Winnipeg city routes, there will be no changes.

Any further ideas? Comments?
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