openplans/OpenTripPlanner — Issue #533: Slight turn direction given when street splits into two one ways
Author: grant-humphries
Created: 2011-10-10 19:18:46+00:00
State: open

In OpenStreetMap when there is some sort of island or barrier dividing the two directions of travel on a street the proper convention is to map this as two one-way streets. Fairly often this barrier will cease and the two one-ways will become a single two way street again or vice versa. The problem we are having is that when this happens the narrative is giving "slight right/left to continue on..." direction when in reality the cyclist is just proceeding straight down the same street.

Here are links to instances of this problem:

http://maps5.trimet.org/otp?purl=/test&submit&fromPlace=45.560117319723,-122.8344421511&toPlace=45.55454696439,-122.83559013655&mode=BICYCLE&min=SAFE&maxWalkDistance=840&time=3:49%20pm&date=10/09/2011&arr=Depart&itinID=1

http://maps5.trimet.org/otp?purl=/test&submit&fromPlace=45.5354951116,-122.84056464048&toPlace=45.532196413476,-122.83951735109&mode=BICYCLE&min=SAFE&maxWalkDistance=840&time=3:49%20pm&date=10/09/2011&arr=Depart&itinID=1

http://maps5.trimet.org/otp?purl=/test&submit&fromPlace=45.49438052551,-122.81337530777&toPlace=45.489683658081,-122.80989916488&mode=BICYCLE&min=SAFE&maxWalkDistance=840&time=3:49%20pm&date=10/09/2011&arr=Depart&itinID=1

http://maps5.trimet.org/otp?purl=/test&submit&fromPlace=45.468468902152,-122.80809500084&toPlace=45.465183782017,-122.80802563399&mode=BICYCLE&min=SAFE&maxWalkDistance=840&time=3:49%20pm&date=10/09/2011&arr=Depart&itinID=1

In response to the issue DT said:

"...I could not generate turn-to-continue directions when the incoming street has the same name as all the possible outgoing streets. That will still generate turn-to-continue directions when the split is at an intersection, but it will reduce the problem."