[Talk-ca] Highway recoding

Ken Wuschke chandler.vancouver at gmail.com
Tue Jan 26 22:06:19 UTC 2016


But there's one point on showing a route as a trunk route that I think is
important to considered. And this would be on a global level, not just for
Canada.

I use OSM on a Garmin Nuvi navigational system. If you are not familiar all
of the OSM maps can be downloaded for free for use on GPS navigational
units. Go to https://www.openmapchest.org/ to see how it is done.

The problem is if you are using the OSM map on a GPS unit to show your
surroundings it is hard to see provincial/state level highways on it. If a
numbered route is categorized as a highway
<http://wiki.openstreetmap.org/wiki/Key:highway>=tertiary
<http://wiki.openstreetmap.org/wiki/Tag:highway%3Dtertiary> then it gets
the same colour rendering for a collector street in an urban area. There is
no difference.

If all provincial numbered routes are designated as a trunk route then the
end user can quickly see this on their GPS unit and therefore can guide
their vehicle to this level of route easily.

I'll see if I can put up screenshot of my GPS unit showing this.
---

On the other hand, any road designated a private road shows up on a Garmin
in bright red over powering all other roads. I don't know how to change
this without re-desginating the private roads on OSM, but that would defeat
what OSM is trying to achieve.

Again, I am thinking of the end user of OSM.

Cheers,
Ken

On Tue, Jan 26, 2016 at 1:49 PM, Chandler Vancouver <
chandler.vancouver at gmail.com> wrote:

> Completely agree, Stewart.
>
> Similarly I live just off a road I would consider to be a tertiary level
> road. It runs for only 4 km and links up residential side streets, a high
> school, an elementary school and a small scale commercial zone. It is only
> two lanes wide but for over 50% of its length has a centre boulevard or a
> centre dual left turn lane. As well, less than 25% of its length has
> residences that off it and none where you can park on the road itself.
>
> Where it meets four main crossroads the intersections are as follows:
>
> Intersection A: full signal with priority given to the crossroad.
>
> Intersection B: a four-way stop.
>
> Intersection C: full signal with priority given to the road in question.
>
> Intersection D: a stop sign with the crossroad given full priority over
> the road in question.
>
> In addition there is a walking trail that crosses with a pedestrian
> activated signal but with an advanced warning signal as described at
> http://wiki.openstreetmap.org/wiki/Canada:British_Columbia#Highways_and_provincial_roads
> under "trunk".
>
> Driving the full length you would know it is a tertiary level route, yet I
> can take photographs of the route that could lead you to believe it is a
> trunk road.
>
> ---
>
> Another example is SW Marine Drive between Camosun Street and the
> University of British Columbia -
> https://www.openstreetmap.org/way/255865854#map=15/49.2428/-123.2196 . It
> is designed at the level described for trunk road at
> http://wiki.openstreetmap.org/wiki/Canada:British_Columbia#Highways_and_provincial_roads,
> yet the OSM contributors have designated it as secondary highway.
>
> I don't find this a "maddening" as you say, but then I feel we could
> adopt a more UK approach to the definition then a infrastructure/design POV.
>
>
>
> On Tue, Jan 26, 2016 at 1:27 PM, Stewart Russell <scruss at gmail.com> wrote:
>
>> A trunk road is not necessarily divided. The limited access part means
>> that it's not residential. It has to go from a town or city to another town
>> or city. It predates or has lesser capacity than a motorway.
>>
>> It's one of these maddening "know one when I see one" definitions that
>> makes perfect sense in the UK but is difficult elsewhere.
>>
>> Much of the Trans-Canada, f'rinstance, would be considered a trunk road.
>>
>> Cheers
>> Stewart
>>
>> _______________________________________________
>> Talk-ca mailing list
>> Talk-ca at openstreetmap.org
>> https://lists.openstreetmap.org/listinfo/talk-ca
>>
>>
>
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