On Tue, 25 Dec 2018 at 09:03, Graeme Fitzpatrick <graemefi...@gmail.com> wrote:
> > Guess it might be a case of suck it & see! > So, after a couple of weeks of experimenting & playing with various blocking options, then checking them with OSRM & GraphHopper (which incidentally, brings up some pretty strange results - I'm even tempted to ignore it's results altogether?) by attempting to route through the roadworks area, I can report back. If anybody would like to experiment themselves, the spot I was using is here: https://www.openstreetmap.org/#map=18/-28.07477/153.43936, with the various blocks being positioned between house number 77 (Mountain View Avenue) at the western corner Ernie Tebb Park, & the unmarked crossing / painted island, between the Park & the lake. I was then attempting to route from "12, Honeyeater Drive, Miami, Gold Coast, Queensland, 4220, Australia" to "20, Nobby Parade, Miami, Gold Coast, Queensland, 4220, Australia", which is a very simple, quite direct route. Unfortunately, when I say that GraphHopper was giving strange results, especially for foot & bicycle, it was doing this: https://www.openstreetmap.org/directions?engine=graphhopper_foot&route=-28.07561%2C153.43761%3B-28.07433%2C153.44100 . If this can't be seen, it has foot traffic walking North up Honeyeater Drive, East down Mountain View Avenue along the road, *not* the adjacent footpath, going the wrong way round the roundabout, continuing down & turning South into Babbler Court, then immediately coming back West along the Mountain View Avenue footpath till just before the roundabout, where it crosses Mountain View Avenue at the footway=crossing + crossing=unmarked, follows the round the corner into Nobby Parade, then crosses at another crossing, before continuing North along the footpath to the destination. Bicycle routing is identical, except that it goes the correct way around the roundabout, before getting onto the footpath! So FYI, the results of my testing were: 1. single barrier=yes (on the road - the actual marked highway=tertiary); access=no: didn't render; doesn't stop vehicle, bike or foot access 2. single barrier=block (on the road); access=no: rendered as dot only; doesn't stop vehicle, bike or foot access 3. row of barrier=block across both lanes; access=no; rendered as row of dots; doesn't stop vehicle, bike or foot access 4. barrier=bollard (one only on road); access=no: rendered as single dot only; doesn't stop vehicle, bike or foot access 5. row of barrier=bollard across both lanes; access=no; rendered as row of dots; vehicles are blocked in OSRM, but GraphHopper still allows bike, foot & vehicle access 6. single barrier=jersey_barrier (on road); access=no: rendered as dot only; doesn't stop vehicle, bike or foot access 7. row of barrier= jersey_barrier across both lanes; access=no; rendered as row of dots; doesn't stop vehicle, bike or foot access 8. single barrier=gate (on road); access=no: rendered as dot only; doesn't stop vehicle, bike or foot access 7. barrier=fence (across full width of road); access=no: rendered on both sides of the road, but not across the road itself; vehicles are blocked in OSRM, but GraphHopper still allows bike, foot & vehicle access 8. barrier=gate in barrier=fence in middle of roadway; access=no on both; gate didn't render, fence still only visible on both sides of the road, but not across the road itself; vehicles are blocked in OSRM, but GraphHopper still allows bike, foot & vehicle access 9. barrier=ditch (across full width of road); access=no; didn't render; doesn't stop vehicle, bike or foot access 10. Least favourable option by far :-( Split the road & cut a small (~5m) section out; shows as two road endings actually touching; vehicles are blocked in OSRM, but GraphHopper still allows bike, foot & vehicle access Increase gap to ~20m; gap shown in road; doesn't stop vehicle, bike or foot access in either router, after a small gap did block OSRM? Increase road gap to ~50m by cutting it at corner of Honeyeater Drive, so whole section of road has disappeared; everything is stopped from going that way, including foot & bike, even though there's a marked footpath along the side of the road? Unless I've been doing something wrong with the way I've been placing the various blocks, this has got me totally confused? Why do we have the various blocking options if they don't actually stop you driving through them? Both routers show foot traffic walking along the length of the road, not the adjacent footpath - why? Anybody have any ideas, or should it all be working OK, & it's just a peculiarity of OSRM / GraphHopper that's been throwing me out? Looking forward to any insights! :-) Thanks Graeme
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