Web conference notes, 2022.04.28 (MDS Working Group)
MDS Working Group
- Every other Thursday at 9am PT, 12pm ET, 5/6pm CET
Zoom Registration Link: https://us02web.zoom.us/meeting/register/tZAscOmhpjIuHNakPx6CNbACpjUjw1Gsucr4
One tap mobile: +19294362866,,84170989462#,,,,*612987# US (New York) - though we encourage Zoom
Note: Attendees register upon entry into the Zoom meeting. An attendee count will be posted here after the meeting:
22 attendees
Main Topics
Note: 30 minute meeting this week!
- Kickoff - Sebastien Berthaud, Blue Systems (5 mins)
- Items for WG Review - Michael Schnuerle, OMF (5 mins)
- Modes Update on Pull Request #763 - Adding passenger services (taxis/TNCs)
- Leave feedback on Issue #759 - MDS Agency and Provider Unification and Summary doc with 4 options
- Wording for defining a trip in MDS - Jean Kao, Populus (20 mins)
WGSC Meeting Organizers
- Host: Sebastien Berthaud, Blue Systems
- Facilitator: Michael Schnuerle, OMF
- Outreach: Michael Schnuerle, OMF
- Note taker: Marie Maxham, E&A
- Leave comments on Modes Update on Pull Request #763 - Adding passenger services (taxis/TNCs)
- Leave feedback on Issue #759 - MDS Agency and Provider Unification and Summary doc with 4 options
- Leave comments on PR 762 about defining a trip
Introductions
Jay Williams @ Bird
Radja Kaboel @ Blue Systems
Main Items
Michael (OMF): Passenger Services PR (https://github.com/openmobilityfoundation/mobility-data-specification/pull/763) call for feedback Delivery bot state mode PR next.
Michael: Agency/Provider Unification document (https://docs.google.com/document/d/134DrPFjSpapW1auTT2M_BuL2E9tdO1At0yu6VII1cPA/edit) call for feedback
Jean (Populus) : Defining a trip (https://github.com/openmobilityfoundation/mobility-data-specification/pull/748) Super-short trips, Phantom trips, trips that end outside the city, etc. Mitch from GBFS says “only reliable indicator” is “more than one minute” - culled > 95% bad trips.
PR has descriptive text rather than any new fields or endpoints. Approximately no change to what Providers send, just guidance for the Agency to filter.
Nivedya (SANDAG): Should we add some sort of upper-bound as well?
Michael: Would we have different thresholds per-mode? Should we add distance-traveled as well?
Emmett (Superpedestrian): Let’s be clear that Providers should still provide ALL trips to whatever endpoints are in use (Agency or Provider or whatever).
Michael: Any computed trip-metrics should be applied post-filtering
Michael: Are there valid trips of length 0?
Emmett: Yes, occasionally there’s a glitch leading to multi-minute 0-distance trips
Sebastien (Blue Systems): Should we ask GBFS team why they didn’t use distance?
Mitch (GBFS): Distance measurement can be tricky due to GPS accuracy. Distance qualifier is probably a reasonable idea.
Michael: Let’s propose 50 meters as a filter too. Scooters typically have odometers which are way more accurate than GPS data.
Neil (Lacuna): Maybe we should look at false-positive/false-negative numbers for a few numbers (25m? 50m? 100m?)
Michael: Who should look at a bunch of data? Providers? Agencies? Tooling companies?
Emmett: I can look at our data, but we’re just one Provider
Jay (Bird): I don’t know how we filter out non-trips, but if we don’t charge, we don’t send the trip record
Jean: We’ll tighten up the PR using today’s feedback and do some analytics on trip data
