[Talk-ca] Trunk usage in Quebec

[Jherome Miguel]

Bonjour!

It has been a rather exasperating conversation in the last few days in
regard to a revision of road classifications, especially with trunk. I find
in the main thread, I got some mappers who suggest trunk should be used
only for expressways, basically a step back from the improvements being
made, but of particular concern is with the trunk usage in Quebec, where
the tag is used in a lot of different cases, especially south of the St.
Lawrence.

>From the current state of road mapping in Quebec, trunk is used in a
variety of ways: autoroute segments that aren't controlled-access,
expressways, some divided provincial routes, some provincial route
realignments, and NHS core routes. How the tag is used, from my observation
of the map at high zoom, varies by which side of the St. Lawrence the road
is located. Use of trunk for expressways, autoroute segments with at-grade
accesses (e.g. A-55 between Saint-Grégory and Saint-Célestin, entire
A-955), significant divided segments of 100-series provincial highways and
even some realignments of provincial highways that used to enter town
centres (e.g. Route 139 between Granby and Cowansville, and the Farnham
bypass) tend to be predominant around Greater Montreal and anywhere south
of the St. Lawrence. NHS core route usage is predominant on the north side
of the St. Lawrence except for some anomalies such as Route 169 near Alma.

Trunks north of the St. Lawrence (save Route 169 near Alma, which isn't an
expressway either) can be retained, but with possible extensions south of
the St. Lawrence (with links between population centres not yet served by
an autoroute like Sherbrooke to Saint-George, Rimouski to Campbelltown, NB,
and connections to border crossings where trunk would be proposed for the
connection on the US side). For the other cases, how to deal with them
varies. Some Greater Montreal trunks can be retained (e.g. Route 132 where
it's an expressway-grade road around Kahnawake and Sainte-Catherine), but
the others should be retagged (up to motorway if it satisfies factors for
it, or down to primary and so on).

Also of question is Route 138 from Quebec City to Sept-Îles; it serves a
fairly sparse region, and best demoted to primary. Route 389 should perhaps
be demoted as well to secondary to line with most of Quebec (200s and
300-series routes are generally secondary), but that may still be
reasonably kept as primary as a critical road link to Labrador. The
Trans-Labrador is another story, but it's currently a trunk that is too
high a classification in a very sparse region with very few roads.

>
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