Pedestrian Data Collection and Consistency in Open Street Maps · • recommend data points x, y...
Transcript of Pedestrian Data Collection and Consistency in Open Street Maps · • recommend data points x, y...
![Page 1: Pedestrian Data Collection and Consistency in Open Street Maps · • recommend data points x, y and z are collected • provide some networking approaches that can be integrated](https://reader033.fdocuments.net/reader033/viewer/2022041416/5e1bff270e2a4a15a230d26f/html5/thumbnails/1.jpg)
Pedestrian Data Collection and Consistency in Open Street Maps
April 20, 2018
![Page 2: Pedestrian Data Collection and Consistency in Open Street Maps · • recommend data points x, y and z are collected • provide some networking approaches that can be integrated](https://reader033.fdocuments.net/reader033/viewer/2022041416/5e1bff270e2a4a15a230d26f/html5/thumbnails/2.jpg)
The Goal – Data Collection and Consistency
Obtain regionally consistent pedestrian asset data that supports:
• potential model improvements for pedestrian travel
• plan monitoring
• consistent evaluation of pedestrian connectivity needs region-wide
• the preservation and maintenance work program
• local needs
![Page 3: Pedestrian Data Collection and Consistency in Open Street Maps · • recommend data points x, y and z are collected • provide some networking approaches that can be integrated](https://reader033.fdocuments.net/reader033/viewer/2022041416/5e1bff270e2a4a15a230d26f/html5/thumbnails/3.jpg)
Composite Connectivity Index
Sound Transit and King County Metro studyAnalysis included:
Intersection Density Sidewalk CoverageRoute directness Projected increase in transit ridershipSignalized Arterial Crossings Bike Stress
Transit Access Assessments
![Page 4: Pedestrian Data Collection and Consistency in Open Street Maps · • recommend data points x, y and z are collected • provide some networking approaches that can be integrated](https://reader033.fdocuments.net/reader033/viewer/2022041416/5e1bff270e2a4a15a230d26f/html5/thumbnails/4.jpg)
The Challenge
• Inconsistent data formats between jurisdictions – data sets are difficult to integrate
• Inconsistent information – different data points are collected and not consistent regionally
• Lack of data in some areas
• Longevity of data collection activities and updates
• Challenge of sharing and accessing data in one place
![Page 5: Pedestrian Data Collection and Consistency in Open Street Maps · • recommend data points x, y and z are collected • provide some networking approaches that can be integrated](https://reader033.fdocuments.net/reader033/viewer/2022041416/5e1bff270e2a4a15a230d26f/html5/thumbnails/5.jpg)
The Challenge
Sidewalk Data Set Example: Inconsistent data formats and lack of detailed information
Polygons Lines on both sidesCenter line with L/R attributes PDF map
No additional data
![Page 6: Pedestrian Data Collection and Consistency in Open Street Maps · • recommend data points x, y and z are collected • provide some networking approaches that can be integrated](https://reader033.fdocuments.net/reader033/viewer/2022041416/5e1bff270e2a4a15a230d26f/html5/thumbnails/6.jpg)
Step 1: Sidewalk Network in OSM
Start with entering sidewalk data into Open Street Maps (OSM)
1. Begin with access to transit locations
2. Prioritize where to begin:• not to overlap what other agencies are doing• suggest high capacity transit and ferries to start
3. Decide on the method: sidewalks as metadata to roads vs. sidewalks mapped as ‘ways’
4. Identify process (bulk import or manual coding)
5. Define essential tags that are needed for step 1
6. Get started…
![Page 7: Pedestrian Data Collection and Consistency in Open Street Maps · • recommend data points x, y and z are collected • provide some networking approaches that can be integrated](https://reader033.fdocuments.net/reader033/viewer/2022041416/5e1bff270e2a4a15a230d26f/html5/thumbnails/7.jpg)
Why PSRC is choosing Open Street Maps
• Existing transit networks and tools already use OSM networks
• Open source – opportunity for PSRC and partners to collectively contribute to one data set
• Data in OSM would benefit from analysis tools developed or being developed (AccessMap)
• Provides interoperability and maintainability
![Page 8: Pedestrian Data Collection and Consistency in Open Street Maps · • recommend data points x, y and z are collected • provide some networking approaches that can be integrated](https://reader033.fdocuments.net/reader033/viewer/2022041416/5e1bff270e2a4a15a230d26f/html5/thumbnails/8.jpg)
![Page 9: Pedestrian Data Collection and Consistency in Open Street Maps · • recommend data points x, y and z are collected • provide some networking approaches that can be integrated](https://reader033.fdocuments.net/reader033/viewer/2022041416/5e1bff270e2a4a15a230d26f/html5/thumbnails/9.jpg)
TriMet and OpenStreetMap
● TriMet provides transit in Portland, Oregon region
● Leaders in open source tools/data
● Helped launch OpenTripPlanner (OTP) in 2009
● Adopted OSMin 2011
Madeline [email protected]
![Page 10: Pedestrian Data Collection and Consistency in Open Street Maps · • recommend data points x, y and z are collected • provide some networking approaches that can be integrated](https://reader033.fdocuments.net/reader033/viewer/2022041416/5e1bff270e2a4a15a230d26f/html5/thumbnails/10.jpg)
Street Data Comparison - why TriMet chose OSM
Commercial
● Costly● Limited control over data
quality and updates
Centerline Files
● Free● Limited coverage area● Not designed for routing
purposes
OpenStreetMap
● Free● Seamless coverage worldwide ● Designed for and supports multi-
modal routing● Investment in community product for
shared benefits● More control, higher quality
![Page 11: Pedestrian Data Collection and Consistency in Open Street Maps · • recommend data points x, y and z are collected • provide some networking approaches that can be integrated](https://reader033.fdocuments.net/reader033/viewer/2022041416/5e1bff270e2a4a15a230d26f/html5/thumbnails/11.jpg)
TriMet 2016 sidewalk tagging
PBOT Growing Transit Communities Pilot
Tagged before 2016 (by both TriMet and broader OSM community)
Sidewalk ProjectColored streetshave sidewalk tags
© OpenStreetMap Contributors. Esri basemap 11
![Page 12: Pedestrian Data Collection and Consistency in Open Street Maps · • recommend data points x, y and z are collected • provide some networking approaches that can be integrated](https://reader033.fdocuments.net/reader033/viewer/2022041416/5e1bff270e2a4a15a230d26f/html5/thumbnails/12.jpg)
2017 — Expanding to seven counties
1/1/17: 35.7% complete 4/1/17: 72.2% complete 7/1/17: 85.7% complete
![Page 13: Pedestrian Data Collection and Consistency in Open Street Maps · • recommend data points x, y and z are collected • provide some networking approaches that can be integrated](https://reader033.fdocuments.net/reader033/viewer/2022041416/5e1bff270e2a4a15a230d26f/html5/thumbnails/13.jpg)
Step 1: Drawing in the sidewalk network
![Page 14: Pedestrian Data Collection and Consistency in Open Street Maps · • recommend data points x, y and z are collected • provide some networking approaches that can be integrated](https://reader033.fdocuments.net/reader033/viewer/2022041416/5e1bff270e2a4a15a230d26f/html5/thumbnails/14.jpg)
Sidewalks as metadata vs. sidewalks as ways
![Page 15: Pedestrian Data Collection and Consistency in Open Street Maps · • recommend data points x, y and z are collected • provide some networking approaches that can be integrated](https://reader033.fdocuments.net/reader033/viewer/2022041416/5e1bff270e2a4a15a230d26f/html5/thumbnails/15.jpg)
Why centerline tags and not separate ways?
● Speed and consistency● Maintenance concerns ● Issues for trip plan narratives
○ Sidewalks don’t have names○ Many more segments
● Would require significant work on OTP code
From https://www.opensidewalks.com/
VS
![Page 16: Pedestrian Data Collection and Consistency in Open Street Maps · • recommend data points x, y and z are collected • provide some networking approaches that can be integrated](https://reader033.fdocuments.net/reader033/viewer/2022041416/5e1bff270e2a4a15a230d26f/html5/thumbnails/16.jpg)
Sidewalk tagging method
● No imports — fully manual● Added centerline tag —
sidewalk=both|left|right|no● Outreach at meetups and via local
OSM user group email● JOSM with sidewalk style● Reference:
○ Local shapefiles○ Best available imagery
● Divided street segments
![Page 17: Pedestrian Data Collection and Consistency in Open Street Maps · • recommend data points x, y and z are collected • provide some networking approaches that can be integrated](https://reader033.fdocuments.net/reader033/viewer/2022041416/5e1bff270e2a4a15a230d26f/html5/thumbnails/17.jpg)
Next steps for TriMet
● OSM Data Maintenance○ Focus on newly constructed areas○ QA/QC
● Continue exploring ways to get curb-level detail into OSM and OTP
● Expansion of Mapillary coverage?
![Page 18: Pedestrian Data Collection and Consistency in Open Street Maps · • recommend data points x, y and z are collected • provide some networking approaches that can be integrated](https://reader033.fdocuments.net/reader033/viewer/2022041416/5e1bff270e2a4a15a230d26f/html5/thumbnails/18.jpg)
OpenSidewalks in OSM (sidewalks as ways) Anat Caspi, PhD, [email protected]
![Page 19: Pedestrian Data Collection and Consistency in Open Street Maps · • recommend data points x, y and z are collected • provide some networking approaches that can be integrated](https://reader033.fdocuments.net/reader033/viewer/2022041416/5e1bff270e2a4a15a230d26f/html5/thumbnails/19.jpg)
Personalized interpretationMakes sidewalk attribute costing possible Truly any tags considered in routing and changed on the fly with user input.
Sidewalk Curb cutSurfaceElevationElevatorsConstruction
Enhancements made possible by OpenSidewalks
![Page 20: Pedestrian Data Collection and Consistency in Open Street Maps · • recommend data points x, y and z are collected • provide some networking approaches that can be integrated](https://reader033.fdocuments.net/reader033/viewer/2022041416/5e1bff270e2a4a15a230d26f/html5/thumbnails/20.jpg)
With OpenSidewalks: Clear data-driven infrastructure decisions
Enhancements made possible by sidewalks as ways
Before OpenSidewalks: “as the crow flies;” zero consideration for pedestrian access
Ability to look at travel via real ability-based isochrones (same color band = same time to travel)
![Page 21: Pedestrian Data Collection and Consistency in Open Street Maps · • recommend data points x, y and z are collected • provide some networking approaches that can be integrated](https://reader033.fdocuments.net/reader033/viewer/2022041416/5e1bff270e2a4a15a230d26f/html5/thumbnails/21.jpg)
How do we get the data?
Coordinate imports of open data
sidewalkifycrossify
Split into tasks
Human verification
OpenSidewalks tools UW can provide
![Page 22: Pedestrian Data Collection and Consistency in Open Street Maps · • recommend data points x, y and z are collected • provide some networking approaches that can be integrated](https://reader033.fdocuments.net/reader033/viewer/2022041416/5e1bff270e2a4a15a230d26f/html5/thumbnails/22.jpg)
Open Imports
1. Create a proposal (example: Santa Clara County sidewalk import)
2. Gain permission to use the data in OSM
3. Announce to OSM community (OSM US Chapter)
4. Wait a reasonable period of time and if no-pushback, you start importing (two weeks-ish)
5. Import must conflate with existing data – not much sidewalk data now so not much conflation done
6. Sidewalk imports would require adding in crossings after
![Page 23: Pedestrian Data Collection and Consistency in Open Street Maps · • recommend data points x, y and z are collected • provide some networking approaches that can be integrated](https://reader033.fdocuments.net/reader033/viewer/2022041416/5e1bff270e2a4a15a230d26f/html5/thumbnails/23.jpg)
How do we get the data?
Crowdsource the network from scratch
Upload to a service
Task + crowdsource
Take geotagged pictures
![Page 24: Pedestrian Data Collection and Consistency in Open Street Maps · • recommend data points x, y and z are collected • provide some networking approaches that can be integrated](https://reader033.fdocuments.net/reader033/viewer/2022041416/5e1bff270e2a4a15a230d26f/html5/thumbnails/24.jpg)
Mapillary – crowdsourced street level views
https://www.mapillary.com/
![Page 25: Pedestrian Data Collection and Consistency in Open Street Maps · • recommend data points x, y and z are collected • provide some networking approaches that can be integrated](https://reader033.fdocuments.net/reader033/viewer/2022041416/5e1bff270e2a4a15a230d26f/html5/thumbnails/25.jpg)
Mapillary
![Page 26: Pedestrian Data Collection and Consistency in Open Street Maps · • recommend data points x, y and z are collected • provide some networking approaches that can be integrated](https://reader033.fdocuments.net/reader033/viewer/2022041416/5e1bff270e2a4a15a230d26f/html5/thumbnails/26.jpg)
Step 1: Sidewalk Network in OSM
Start with entering sidewalk data into Open Street Maps (OSM)
1. Begin with access to transit locations
2. Prioritize where to begin:• not to overlap what other agencies are doing• suggest high capacity transit and ferries to start
3. Decide on the method: sidewalks as metadata to roads vs. sidewalks mapped as ‘ways’
4. Identify process (bulk import or manual coding)
5. Define essential tags that are needed for step 1
6. Get started…
![Page 27: Pedestrian Data Collection and Consistency in Open Street Maps · • recommend data points x, y and z are collected • provide some networking approaches that can be integrated](https://reader033.fdocuments.net/reader033/viewer/2022041416/5e1bff270e2a4a15a230d26f/html5/thumbnails/27.jpg)
Choosing a Methodology
Pilot study:• Choose handful of existing or future transit hubs for pilot
(places where there is added benefit without overlapping efforts)
• Test various methods (within ½ mile transit shed) and report on time and benefits of each :• Manual coding of sidewalks as metadata• Manual coding of sidewalks as ways• Import sidewalks as ways
• Sidewalks, crossings
![Page 28: Pedestrian Data Collection and Consistency in Open Street Maps · • recommend data points x, y and z are collected • provide some networking approaches that can be integrated](https://reader033.fdocuments.net/reader033/viewer/2022041416/5e1bff270e2a4a15a230d26f/html5/thumbnails/28.jpg)
Step 2: Consistency for other attributes
• Identify what other attributes are important to collect• Condition, accessibility, width, slope, etc.• For what purpose – access routing, maintenance costs,
other local needs
• Work with BPAC and OSM Community on consistency of attributes
• OSM is a global community where some consistency (standards) have been set, some can be proposed
• Communicating the proposed framework
https://wiki.openstreetmap.org/wiki/Proposed_features/sidewalk_schema#The_underlying_pedestrian_network
![Page 29: Pedestrian Data Collection and Consistency in Open Street Maps · • recommend data points x, y and z are collected • provide some networking approaches that can be integrated](https://reader033.fdocuments.net/reader033/viewer/2022041416/5e1bff270e2a4a15a230d26f/html5/thumbnails/29.jpg)
A potential ‘menu’ approach
‘Menu’ approach as guidance for local jurisdictions (example):
• recommend data points x, y and z are collected
• provide some networking approaches that can be integrated into regional data sets or OSM (example: ArcGIS for local governments)
• contribution of data collection into Open Street Maps
• Suggested process (sidewalks as metadata or ways)
• Suggested tagging of attributes