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Allow negative departure_load values in stop_visits #279

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Allow negative departure_load values in stop_visits #279

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2b2557d
remove minimum constraint from stop_visits departure_load
chrisyamas Aug 13, 2026
7ec0f8e
add changelog entry for departure_load constraint removal
chrisyamas Aug 13, 2026
0c29d60
apply suggested rewording of departure_load description
chrisyamas Aug 20, 2026
81e0bc3
apply suggested rewording of departure_load changelog entry
chrisyamas Aug 20, 2026
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4 changes: 4 additions & 0 deletions CHANGELOG.md
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Expand Up @@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0

## [Unreleased]

### Changed

- Removed `minimum: 0` constraint from `stop_visits.departure_load`. This field is often derived from observations of boardings and alightings that are subject to observation error and those errors may result in negative values ([#270](https://github.com/TIDES-transit/TIDES/issues/270))

## [1.0] - 2025-12-23

### Changed
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5 changes: 1 addition & 4 deletions spec/stop_visits.schema.json
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Expand Up @@ -139,10 +139,7 @@
{
"name": "departure_load",
"type": "integer",
"description": "Number of riders on the vehicle when departing the stop.",
"constraints": {
"minimum": 0
}
"description": "Number of riders on the vehicle when departing the stop. `departure_load` is typically derived from boardings and alightings and negative values are possible and permitted due to errors in the APC observations; data producers should document how negative values should be interpreted if present."
},
{
"name": "door_open",
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