RELEASES.md

TDx Specification v1.1

Released February 2023

New Functionality

• Define the RoadIncidentFeed and IncidentRoadEvent to enable providing a feed of crashes, natural disasters, special events, and weather.
• Add vehicle_impact property to the RestrictionRoadEvent
• Incorporate changes made to the Work Zone Data Exchange (WZDx) Specification versions 4.1 and 4.2 adding new functionality to objects and enumerated types:
  • Recommend using Universally Unique Identifiers (UUID) for the id property of the RoadEventFeature and FeedDataSource, noting that a UUID may be required in the next major release.
  • Add name property to RoadEventCoreDetails to allow providing a human-friendly name for a road event.
  • Add a related_road_events property (and new supporting object RelatedRoadEvent and enumerated type RelatedRoadEventType) to the RoadEventCoreDetails to allow explicitly defining relationships/connections between road events; this replaces the Relationship object concept.
  • Add the following values to the Direction enumerated type: inner-loop, outer-loop, undefined, and unknown.
  • Add no-passing to the RestrictionType enumerated type.
  • Add two-way-center-turn-lane to the LaneType enumerated type to replace the existing center-left-turn-lane with a more generic value.

Refactoring

• Incorporate changes made to the WZDx Specification deprecating objects, properties, and enumerated type values utilized in this specification:
  • Deprecate the relationship property on the RoadEventCoreDetails; use the new related_road_events property instead.
  • Deprecate the center-left-turn-lane value in the LaneType enumerated type; use the new two-way-center-turn-lane instead.

Cleanup

• Incorporate changes made to WZDx Specification cleaning up objects and values utilized in this specification:
  • Expand the description of the geometry property on the RoadEventFeature object to clarify how geometry should be used to represent a road event.
  • Update the description of the open and closed enumerations of the LaneStatus enumerated type.

TDx Specification v1.0

Released December 2021 as WZDx v4.0

TDx version 1.0 implements defines the RoadRestrictionFeed.

Features

• Define the RoadRestrictionFeed and RestrictionRoadEvent to enable providing a feed of restrictions on roadways, such as bridge clearances, using objects and enumerations developed for the WZDx Specification (including Restriction, Lane, RoadEventCoreDetails, FeedInfo, and FeedDataSource)