bad u-turn on road with turn restriction
RedAuburn opened this issue · comments
Describe the bug
routing tries to make a u-turn to get to a road that has a turn restriction
To Reproduce
https://www.openstreetmap.org/directions?engine=graphhopper_car&route=51.47523%2C0.01003%3B51.47462%2C0.00983
Expected behaviour
should be routed the fastest legal way:
https://www.openstreetmap.org/directions?engine=fossgis_osrm_car&route=51.47523%2C0.01003%3B51.47462%2C0.00983
Screenshots
current / correct
Similar issue here, biking route makes illegal turn, rather than telling cyclists to dismount and use the pedestrian crossing, The car route functions correctly.
Road Tags:
bicycle=yes
highway=tertiary
horse=no
lanes=2
maxspeed=30
motor_vehicle=yes
name=Carrer Gran de Gràcia
name:ca=Carrer Gran de Gràcia
name:etymology:wikidata=Q852697
oneway=yes
restriction=no_left_turn
surface=asphalt
wikidata=Q1805479
wikipedia=ca:Carrer Gran de Gràcia
routing tries to make a u-turn to get to a road that has a turn restriction
Yes, this is because the penalty for making the u-turn is too low, related: #2883
Similar issue here, biking route makes illegal turn, rather than telling cyclists to dismount and use the pedestrian crossing,
The eastern crossing used to be tagged as bicycle=no until a few hours ago so it is still ignored for bikes. The other issue here is that turn restrictions aren't considered for bicycles, yet.
Yes, I fixed that and am aware the cache takes time to update, I just don't think it'll ever choose to dismount over making the illegal turn. As you say, it's not considered.
I just don't think it'll ever choose to dismount over making the illegal turn.
Yes, currently it won't, because for bicycle=dismount there is also a penalty. But once we enable turn restrictions for bicycles the route with the road crossing should be preferred.