Changeset: 111449471
Fix highway ramps.
Closed by xyz32
Tags
changesets_count | 910 |
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created_by | iD 2.20.1 |
host | https://www.openstreetmap.org/edit |
imagery_used | Bing aerial imagery |
locale | en |
Discussion
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Comment from ChaireMobiliteKaligrafy
Hi! highway ramps and motorways have been meticulously aligned in the montreal region using up to date aerial imagery and they were aligned to reduce trucks and buses turning radius. Please keep them as is or ask before modifying them. Thanks!
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Comment from xyz32
Hi,
Sorry I didn't know I was supposed to ask before fixing the map.
I strongly disparage with the arguments given.
The current mapping of this particular ramps does not match reality. Please check the dashed lines on the roads, they are a better indicator where the ramp starts.
Another data of comparison is the way they are mapped on google maps: https://www.google.com/maps/@45.486188,-73.6344392,19zI do believe my edit makes more sense then the way they are now. Including the turn restrictions I have added. Thanks.
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Comment from xyz32
P.S.: maps should also reflect reality, not the driving style of some vehicles.
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Comment from ChaireMobiliteKaligrafy
I understand your issues. The main issue is regarding autonomous vehicles and trucks that will be flooding the streets in the near future. The way openstreetmap users usually merge lanes at intersections creates bery hard turn just before the intersections and this could cuase erratic behaviour with autonomous vehicles. That is why we decided to at least make the merging more fluid (longer merging distances, merging at the end of non-dash/continuous lanes) instead of at the instersection. This was also discussed with official authorities like the MTQ. OpenStreetMap is currently used by autonomous vehicles to calculate turning radiuses and angles, so we need to make sure that we do not create articifial turns, especially on motorways and high speed arterials. If you want to discuss this issue further, you can send me private messages. Thanks for your understanding. In your example, the way the Google Maps roads are merged is way to hard. No vehicle will make that kind of hard merging. Google Maps is not used by autonomous vehicle for routing, but OpenStreetmap is already used (especially by Tesla and comma.ai). We are trying to get a compromise between theoretical information and practical data for autonomous routing.
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