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Adding turn restrictions in Canada using Mapillary #213
Bing/Mapbox satellite imagery for cross verification of photograph location/bearing and turn lane markings
Process
Two mappers can work on one city together and update the spreadsheet with their names, start and end time
Divide the city into half based on a road/landmark and work at different parts of the city to avoid conflict
The number of already mapped turn restrictions is given in the spreadsheet. Use the Overpass queries given in the spreadsheet to get the edit count after a city is completed
I came across this issue where the mapillary signage showing no_u_turn and it should be added via way instead of node. For this cases we should work in JOSM to add this kind of restrictions. It would be nice to have this feature in iD as well.
Mapillary has an efficient tool in iD that displays the restriction detected.
It will help in filtering out the mapillary image with the restriction in iD editor and also know which restriction has been detected.
Here's how activate the tool:
Reacted by Arun Ganesh, Manohar Erikipati, Nammala Krishna, Maanya Umashaanker, Bharata and Nikhil
Good Mapillary coverage for Ottawa. Most detected restrictions were already on OSM.
Mapillary data layer in iD is very helpful to identify restrictions detected in specific mapillary images.
Pain points
iD editor does not support adding no_u_turn restriction via way instead of node. Need to use JOSM for this.
Adding conditional restrictions in iD requires editing the tags manually, just like JOSM.
It is not possible to see the capture date of the mapillary image in both the Navigation map and iD editor in cases when more than one mapillary path exist on the road. JOSM conquers here.
Mapping in iD editor along with the Navigation map requires switching between 3 tabs to map, 2 tabs to see the full image to orient to the location, where as with JOSM it is all baked in when opened from the Navigation map.
Other observations
Sudden increase in detected restrictions in the evening corresponding with new Mapillary website launch.
Since mapillary turn restrictions layer is not loading/taking a long time to load in my browser, I'm sticking to iD editor to find out mapillary turn restrictions. Also while doing this, I'm using the gpx of the boundary file so that I don't get lost outside the city boundary.
Reacted by Poorni Badrinath , Nammala Krishna, Manohar Erikipati and Bharata
Conditional turn-restriction written in French:
These board means Monday-Friday. Source for translation in case anyone sees any other days of the week written in French.
So this no left restriction board is placed on Dundas Street.
Just wanted to confirm whether this restriction is for no left from Dundas Street to Beamish street (because Beamish Street is on the right side) or is it for Beamish Street to Dundas Street, or for Bloor to Beamish street since all three are different streets.
I think they are warning ppl they cant cut through beamish if they want to turn left on bloor street, because you cant turn left on beamish and bloor, you can only turn right
Would seem so I interpret it as people often try taking beamish street to turn left on bloor, but can't and get pissed off. This sign seems to be a warning that there are only right turns at beamish and bloor. So if people want to do so continue on dundas for a street that will allow it
Turn restriction task update: Out of the five cities, we only have Toronto left to finish adding turn restrictions. The other four cities: Montreal, Vancouver, Calgary and Ottawa are completed 🎉 The stats are being updated in the OP
Reacted by Nammala Krishna, Karukonda Upendra and Manohar Erikipati
One plugin for JOSM that may help highlight areas of interest is the improve-osm tools. Combined with mapillary photos, it would likely call out areas where road signs may not have been detected, but traffic patterns suggest there is a restriction.
Turn restriction task update: Adding turn restrictions in five priority cities of Canada (Toronto, Ottawa, Montreal, Vancouver, Calgary) is now complete! 🎉 We are now validating the turn restrictions we added during the sprint. Stats are updated in the OP
@gundersen - We added a total of 364 turn restrictions, and modified/improved 29 turn-restrictions as a team. Between the community and us, we contributed a total of 423 turn restrictions in five cities in Canada.
Here is a detailed breakdown.
Table 1: Breakdown of turn restrictions between Mapbox and Community
City
Turn restrictions Version 1(Newly added)
Modified/improved (Version 2)
Toronto
Mapbox : 90 ; Community : 18
Mapbox : 5 ; Community : 12
Ottawa
Mapbox : 94 ; Community : 3
Mapbox : 6 ; Community : 1
Montreal
Mapbox : 95 ; Community : 38
Mapbox : 9 ; Community : 7
Vancouver
Mapbox : 83 ; Community : 0
Mapbox : 8 ; Community : 1
Calgary
Mapbox : 2 ; Community : 0
Mapbox : 1 ; Community : 2
Total
Mapbox : 364 ; Community : 59
Mapbox : 29 ; Community : 21
Note: Version 2 is when we modify/improve already existing mapped turn restrictions.
Table 2: Total brand new turn restrictions created during the project (No version 2)
City
Total adding during this project both by community and Mapbox
Adding turn restrictions in Canada is completed in all priority cities. The team and community together have added 423 turn restrictions. 👏 🎉 The stats for individual cities are:
City
Total adding during this project both by community and Mapbox
Toronto
108
Ottawa
97
Montreal
133
Vancouver
83
Calgary
2
Total
423
Detailed stats for all the turn restrictions we added can be found here
Also, we have completed validating all the turn restrictions added in five cities. It would be helpful to have the community look into our edits and let us know if there are any errors that we could rectify. There is a neat tool, restriction validator, which shows all the restrictions added, highlighting which ones are incorrect/correct.
It was great to have the community working alongside us in adding turn restrictions, clearing doubts, improving our workflow and suggesting better ways to add restrictions in Canada. We hope the support would continue in our next task of adding exits and destinations for all the major highways in the five priority cities of Canada.
Activity
geohacker commentedon Jul 20, 2016
🚗 🍁
krishnanammala commentedon Jul 21, 2016
I came across this issue where the mapillary signage showing
no_u_turnand it should be added via way instead of node. For this cases we should work in JOSM to add this kind of restrictions. It would be nice to have this feature iniDas well.cc @planemad @bhousel
planemad commentedon Jul 21, 2016
Came across this sign which I interpreted as
no left turn on redor no free left. This is not a turn restriction. Mark asinvalid.poornibadrinath commentedon Jul 21, 2016
Mapillary has an efficient tool in iD that displays the restriction detected.

It will help in filtering out the mapillary image with the restriction in iD editor and also know which restriction has been detected.
Here's how activate the tool:

bhousel commentedon Jul 21, 2016
Yes, having turn restrictions via way in iD would be really useful.. We have an issue for it:
openstreetmap/iD#2346
manoharuss commentedon Jul 22, 2016
Trial run for Ottawa using iD
Summary
What worked well
Pain points
Other observations
cc @planemad @maning
ramyaragupathy commentedon Jul 25, 2016
Since mapillary turn restrictions layer is not loading/taking a long time to load in my browser, I'm sticking to iD editor to find out mapillary turn restrictions. Also while doing this, I'm using the gpx of the boundary file so that I don't get lost outside the city boundary.

srividyacb commentedon Jul 25, 2016
Conditional turn-restriction written in French:
These board means
Monday-Friday. Source for translation in case anyone sees any other days of the week written in French.srividyacb commentedon Jul 25, 2016
Instructions in french above the turn-restriction sign: 💭
srividyacb commentedon Jul 25, 2016
What are the usual instructions below turn-restrictions like these? The maximum words we can predict on the board is
Except Vehicles ?scruss commentedon Jul 25, 2016
You've got that Quebec is all no right turn on red, yes?
15 remaining items
srividyacb commentedon Aug 2, 2016
@andrewpmk Yeah right. Seeing Camosun Street joining the main highway. Adding turn-restriction to it. Thank you very much.
poornibadrinath commentedon Aug 2, 2016
So this no left restriction board is placed on Dundas Street.
Just wanted to confirm whether this restriction is for no left from Dundas Street to Beamish street (because Beamish Street is on the right side) or is it for Beamish Street to Dundas Street, or for Bloor to Beamish street since all three are different streets.
This is the restriction point that is detected.
james2432 commentedon Aug 2, 2016
I think they are warning ppl they cant cut through beamish if they want to turn left on bloor street, because you cant turn left on beamish and bloor, you can only turn right
krishnanammala commentedon Aug 2, 2016
Any Idea on what this Turn Restriction implies?
james2432 commentedon Aug 2, 2016
You must turn right(except bicycles)
poornibadrinath commentedon Aug 2, 2016
@james2432, so this restriction is for Bloor Street from Beamish Street?
james2432 commentedon Aug 2, 2016
Would seem so I interpret it as people often try taking beamish street to turn left on bloor, but can't and get pissed off. This sign seems to be a warning that there are only right turns at beamish and bloor. So if people want to do so continue on dundas for a street that will allow it
poornibadrinath commentedon Aug 2, 2016
@james2432 Thank you so much for the help! Will add the restriction.
poornibadrinath commentedon Aug 4, 2016
Turn restriction task update: Out of the five cities, we only have Toronto left to finish adding turn restrictions. The other four cities: Montreal, Vancouver, Calgary and Ottawa are completed 🎉 The stats are being updated in the OP
CloCkWeRX commentedon Aug 6, 2016
One plugin for JOSM that may help highlight areas of interest is the improve-osm tools. Combined with mapillary photos, it would likely call out areas where road signs may not have been detected, but traffic patterns suggest there is a restriction.
See http://www.openstreetmap.org/user/mvexel/diary/37571 for a bit more detail.
poornibadrinath commentedon Aug 8, 2016
Turn restriction task update: Adding turn restrictions in five priority cities of Canada (Toronto, Ottawa, Montreal, Vancouver, Calgary) is now complete! 🎉 We are now validating the turn restrictions we added during the sprint. Stats are updated in the OP
shvrm commentedon Aug 9, 2016
@gundersen - We added a total of 364 turn restrictions, and modified/improved 29 turn-restrictions as a team. Between the community and us, we contributed a total of 423 turn restrictions in five cities in Canada.
Here is a detailed breakdown.
Table 1: Breakdown of turn restrictions between Mapbox and Community
Note: Version 2 is when we modify/improve already existing mapped turn restrictions.
Table 2: Total brand new turn restrictions created during the project (No version 2)
cc: @manoharuss
poornibadrinath commentedon Aug 11, 2016
Adding turn restrictions in Canada is completed in all priority cities. The team and community together have added 423 turn restrictions. 👏 🎉 The stats for individual cities are:
Detailed stats for all the turn restrictions we added can be found here
Also, we have completed validating all the turn restrictions added in five cities. It would be helpful to have the community look into our edits and let us know if there are any errors that we could rectify. There is a neat tool, restriction validator, which shows all the restrictions added, highlighting which ones are incorrect/correct.
It was great to have the community working alongside us in adding turn restrictions, clearing doubts, improving our workflow and suggesting better ways to add restrictions in Canada. We hope the support would continue in our next task of adding exits and destinations for all the major highways in the five priority cities of Canada.
/cc: @mapbox/team-data
poornibadrinath commentedon Aug 24, 2016
Closing #213 🚀