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MobilityData / gtfs-validator

Canonical GTFS Validator project for schedule (static) files.
https://gtfs-validator.mobilitydata.org/
Apache License 2.0
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Frequencies.txt exact_times=0 trips must not have stop_times.timepoint=1 records #823

Closed barbeau closed 3 years ago

barbeau commented 3 years ago

Is your feature request related to a problem? Please describe. There is an optional field in stop_times.txt timepoint that is used to specify a timepoint that a transit vehicle should strictly adhere to (e.g., hold if they are running early). If a trip is defined in frequencies.txt with the exact_times=0 value, then it is a frequency-based trip, which means that a schedule doesn't exist.

Therefore, frequency-based trips with exact_times=0 should NOT have any timepoint=1 values in stop_times.txt - the field should either be 0 or blank.

Proposed solution New rule - if a GTFS dataset has stop_times.timepoint=1 for any trips in frequencies.txt with exact_times=0, that is an error.

lionel-nj commented 3 years ago

Closing for now as we will not implement this invariant - we might revisit this in the future following spec clarification.

More details in the linked PR : #887