Only 13 of 55 specifications pass all five openness tests in MDIP's registry. Free documentation is common; open governance divides the field, and compliance does not guarantee adoption.
https://its-feed.com/articles/mobility-data-interoperability/
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I am going to attend 2026 International Mobility Data Summit (mobilitydata.org/2026-interna...)! #MobilityData #GTFS #OpenData #transittech
