[Talk-ca] Secret routing demo.

[Paul Norman]

I think I have a note somewhere that says "This is confusing in OSM. It's
worse on the ground". I try to include those when I map something that seems
completely illogical, but is an accurate representation of reality.

I fixed the Brunette/Bernatchey intersection - my imagery indicates that you
can't get to that from the service lane, so you can't go from the middle of
the H to westbound brunette and there's not enough room to do a u-turn.

I also fixed up my UBC commute - unfortunately, the
secondary/tertiary/primary designations don't mean as much in the city for
travel time as the router thinks. It gets the work commute exactly right, in
both directions.

> -----Original Message-----
> From: Adam Dunn [mailto:dunnadam at gmail.com]
> Sent: Saturday, March 05, 2011 10:03 PM
> To: talk-ca
> Subject: Re: [Talk-ca] Secret routing demo.
> 
> In Vancouver, from Hwy 1 heading west onto Brunette Ave heading
> southwest, the routing software advises to take the offramp going north
> onto Brunette, then do a u-turn at the Brunette/Bernatchey intersection
> in order to head south on Brunette. However, if one were to continue
> along Hwy 1, there is a proper offramp to go south on Brunette. Judging
> by the map, it looks like the u-turn method is actually shorter in terms
> of distance, so this is what the routing software chooses to do! (plus
> the Brunette/Bernatchey intersection is an H style [Brunette being the
> dual-way], so the software doesn't see it as a u-turn). A no_u_turn
> relation would fix this issue, but I'm not sure if u-turns are actually
> restricted there.
> 
> Also, the routing software attempts to use ferries if it needs to, but
> doesn't seem to be using the Horseshoe Bay (Vancouver) <-> Departure Bay
> (Nanaimo) route even though it all seems okay in data.
> 
> Adam
> 
> P.S. pnorman is my hero for the following tag: note=Yes, this track does
> overlap a road It's nice when people explain their odd ways of mapping
> (a rail and a road overlapping ways in this case).
> 
> On Sat, Mar 5, 2011 at 8:36 PM, James Ewen <ve6srv at gmail.com> wrote:
> > Section of highway 2 southbound immediately south of the Anthony
> > Henday was one way northbound not allowing anyone to leave the city of
> > Edmonton! Reversed the flow!
> >
> > James
> > VE6SRV
> >
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> 
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