On 2018-03-26 07:20 AM, Olivia Robu - (p) wrote:
Hello,
The Telenav Map team has done some research on the status of the
ways and relations of Trans-Canada Highway.
Here are some conclusions from this research:
* The highway is formed from 30 routes;
The Trans-Canada highway is not really 1 highway, so this is probably
not surprising. In many places, the Trans-Canada highway splits in
2, so probably cannot have 1 route anyway.
* Every route has different names for the name tag, such as:
street names, other routes names or Trans-Canada highway name in
different forms;
* The issue above is repeating for the ref tag;
IMO the routes and the refs need to match, or the refs need to be
removed given that routes should supersede refs. In my investigations
in Ontario I see lots of places where routes and refs don't match.
* The name of Trans-Canada highway has more than one form
(Trans-Canada Highway, TransCanada Highway, Trans Canada
Highway, etc);
Probably good to standardize that. However, in Quebec I would think
the French name would take precedence. "/Route Transcanadienne"/
* Another issue is the variety of names in other tags related to
it (such as: name:en, name:fr, alt_name, alt_name:en,
alt_name:fr, nat_name);
* There are some routes that don’t have a route name only ref (5
routes);
* There are some routes that overlap:
o in Manitoba: - PTH 1 (MB Trans-Canada Highway) and
Trans-Canada Highway (Super);
- Yellowhead Highway and PTH 16 (MB Trans-Canada Highway);
o in Alberta: Trans-Canada Highway (AB) and Trans-Canada
Highway (Super);
o in British Columbia: - Trans-Canada Highway (BC, Super) and
Trans-Canada Highway;
* About 90% of these routes are broken;
* About 80% of these routes have highway value flip flop
(motorway, trunk, primary);
Highway 17 in Ontario is not a motorway. So I would expect different
segments to be different. Highway 417 (motorway) changes to Highway
17 (trunk) just west of Arnprior Ontario. This is correct.
We propose to make some improvements to standardize all the routes.
We would like to get your thoughts and feedback on the following
questions:
* What is the correct form for the name that appears in the way
name tag? For example: “Highway 417” is part of Trans-Canada
Highway and has the name value tag “Highway 417”. To resolve
this issue, we would need to standardize the ways’ name tag for
all the provinces. The question is, should we modify the way
names in to “Trans-Canada Highway”, or should we insert the name
“Trans-Canada Highway” at the end of the name, like this:
“Highway 417 (Trans-Canada Highway)”, or should we leave it like
it is?
No, definitely not.
*
* Another issue is related to the official name of the highway.
According to our research the official name for Trans-Canada
Highway is “Trans-Canada Highway”. In our research we have found
several forms of this name: TransCanada Highway, Trans Canada
Highway, etc. Should we change all the names to “Trans-Canada
Highway”?
In Quebec probably "/Route Transcanadienne"/
*
* Another question is related to the priority of the names in the
name value tag and also for the ref tag. If we have a way that
has a street name (“Old Highway 16” or “North York River Road”)
and two routes that overlap (ex: Trans-Canada Highway and
Highway 11). What is the name and the ref that should appear in
the way name tag and ref tag?
Highway 11. Local road first.
*
* In case of overlapping identical routes (ex: in Manitoba there
is two routes for Trans-Canada Highway). What should be the best
approach?
The Trans-Canada Highway has multiple routes. It is not one highway.
The graphic on wikipedia, probably shows this clearly.
https://en.wikipedia.org/wiki/Trans-Canada_Highway
*
* In case of highway value flip flop (motorway, trunk, primary),
there are several segments like this outside the cities (ex.:
Route “Ontario Highway 17 (Blind River to North Bay) (ID
3739829)”, or Route “Trans Canada Highway 104” (ID 1732797)).
For areas outside the cities we propose to change the highway
value into motorway/trunk. What do you think about this issue?
If it is really a motorway, yes. But many places outside of cities it
is not a motorway.
*
We think that one approach to resolve the first problem could be to
add “Trans-Canada Highway” or “Highway 417 (Trans-Canada Highway)”
to the way name for all the routes, and the ref number correspondent
to each route that forms the Trans-Canada Highway.
You could add an alt_name or similar tag.
We look forward to hearing your feedback and hope to improve the
situation together.
Here is the link to github ticket that we created:
https://github.com/TelenavMapping/mapping-projects/issues/57
Highway 17 just west of Arnprior has the following tags, which looks
correct to me:
alt_name=Trans-Canada Highway
highway=trunk
lanes=2
name=Highway 17
ref=17
Please note some sections of this route will have multiple alt_names.
Eg the 401 between Trenton and Toronto will have:
- Highway 401 (primary name)
- Trans-Canada Highway
- Macdonald-Cartier Freeway
- Highway of Heroes
Although I see the existing tags are inconsistent here.
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