Routing improvement, prioritize alternative routes upon deviation #3335

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opened 2022-09-04 11:28:30 +00:00 by Outlet2048 · 2 comments

Outlet2048 commented

2022-09-04 11:28:30 +00:00

(Migrated from github.com)

When you leave a given route you're currently following the app tries everything it can to re-route you back onto the original route

So much so that it always wants you to drive into the smallest of all side streets to turn around at any point. And following the main road and just taking another turn isn't being considered
Now obviously I'd rather follow the main road and turn later instead of driving through a thousand side lanes
The issue is that route recalculation takes some time and it has to be done each and every time you chose to ignore one of the side roads that the app so desperately wants to send you on
So basically you're driving in blind mode while the app constantly tries to calculate another route that doesn't make any sense

I also have a Screenshot from this interesting turn instruction

(the preferred route for me was Pflugacker as it runs parallel to the road we came from and also leads right to the desired destination)

Since I was supposed to navigate for the driver I had to switch to magic earth because OM didn't let me drive the main street further up north
Magic earth did Indeed behave as expected so I assume it is not an issue with map data but instead the routing algorithm

When you leave a given route you're currently following the app tries everything it can to re-route you back onto the original route So much so that it always wants you to drive into the smallest of all side streets to turn around at any point. And following the main road and just taking another turn isn't being considered Now obviously I'd rather follow the main road and turn later instead of driving through a thousand side lanes The issue is that route recalculation takes some time and it has to be done each and every time you chose to ignore one of the side roads that the app so desperately wants to send you on So basically you're driving in blind mode while the app constantly tries to calculate another route that doesn't make any sense I also have a Screenshot from this interesting turn instruction ![Screenshot_2022-08-31-16-05-54-75_75d0290a7c00525acd83c0ab8700d64c.jpg](https://user-images.githubusercontent.com/72819077/188310932-52124255-0095-4d74-9f31-b60c87fddf59.jpg) (the preferred route for me was Pflugacker as it runs parallel to the road we came from and also leads right to the desired destination) Since I was supposed to navigate for the driver I had to switch to magic earth because OM didn't let me drive the main street further up north Magic earth did Indeed behave as expected so I assume it is not an issue with map data but instead the routing algorithm

biodranik commented

2022-09-04 21:19:38 +00:00

(Migrated from github.com)

Do you have start and end points for this wrong route? Does it work well at osm.org?

Outlet2048 commented

2022-09-13 09:45:06 +00:00

(Migrated from github.com)

https://www.openstreetmap.org/directions?engine=graphhopper_bicycle&route=53.6094%2C9.9030%3B53.6158%2C9.9045#map=16/53.6125/9.9067

The OSM website forgets that I was already moving in the direction away from the destination and therefore cannot u-turn on the main street
Therefore, it should route via Pflugacker so you dont have to turn like shown above.
Having to give right of way a few times is way slower than just driving the Pflugacker route
Especially when considering that the user is already moving in one direction

https://www.openstreetmap.org/directions?engine=graphhopper_bicycle&route=53.6094%2C9.9030%3B53.6158%2C9.9045#map=16/53.6125/9.9067 The OSM website forgets that I was already moving in the direction away from the destination and therefore cannot u-turn on the main street Therefore, it should route via Pflugacker so you dont have to turn like shown above. Having to give right of way a few times is way slower than just driving the Pflugacker route Especially when considering that the user is already moving in one direction

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