TIDES v1.0 - Stable Baseline

TIDES v1.0 -- Stable Baseline Release

This release promotes TIDES from v1.0-beta.1 to a stable v1.0 release. There are no normative changes to the specification. This establishes a stable reference point before v2.0 development begins.

What's New

• Added CHANGELOG.md following Keep a Changelog format

Core Tables (unchanged from v1.0-beta.1)

• vehicle_locations - Timestamped vehicle locations and speeds.
• passenger_events - Timestamped passenger-related events, including boardings and alightings.
• fare_transactions - Timestamped fare transaction, associated with devices.
• stop_visits - Summarized boarding, alighting, arrival, departure, and other events (kneel engaged, ramp deployed, etc.) by trip and stop for each service date.
• trips_performed - Trips performed for each service date.
• station_activities - Summarized transactions, entries, and exits by stop or station and time period for each service date (for events not associated with a trip).
• devices - Measurement devices, such as AVL, APC, and AFC devices, associated with vehicles or stops or stations.
• train_cars - Assets that comprise vehicles, such as train cars, with descriptive information.
• vehicle_train_cars - Relationships between assets and vehicles.
• vehicles - Vehicles, including buses and train consists, with descriptive information.
• operators - Personnel who operate vehicles.

What's Next

The Issues Working Group has finalized several normative changes for v2.0, including:

• #220 - a vehicle_crew table
• #235 - event type naming convention (breaking change)
• #237 - duration field naming (breaking change)
• #240 - vehicle label field

Those in-development changes will be merged to the develop branch and released as v2.0 pre-releases in early 2026.