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RoadEvent Object

The RoadEvent object contains information that describes where, when, and what activity is taking place along a road segment. This specification currently accommodates work-zone and detour type road events, specified by the road event's event_type property (see EventType).

Properties

Name Type Description Conformance Notes
event_type EventType The type/classification of road event. Required
data_source_id String Identifies the data source from which the road event originates. Required The value must match to the data_source_id property of a RoadEventDataSource included within the same WZDx GeoJSON document.
start_date String; date-time The UTC time and date when the event begins. Required All datetime formats shall follow RFC 3339 Section 5.6. Example: 2016-11-03T19:37:00Z.
end_date String; date-time The UTC time and date when the event ends. Required All datetime formats shall follow RFC 3339 Section 5.6. Example: 2016-11-03T19:37:00Z.
start_date_accuracy TimeVerification A measure of how accurate the start Date Time is. Required
end_date_accuracy TimeVerification A measure of how accurate the end Date Time is. Required
beginning_accuracy SpatialVerification Indicates how the beginning coordinate was defined. Required
ending_accuracy SpatialVerification Indicates how the ending coordinate was defined. Required
road_names Array; [String] A list of publicly known names of the road on which the event occurs. This may include the road number designated by a jurisdiction such as a county, state or interstate (e.g. I-5, VT 133). Conditional: required if road_name is not provided. This property captures the functionality of the deprecated road_number and road_name properties and conformance will be required in a future release.
direction Direction The digitization direction of the road that is impacted by the event. This value is based on the standard naming for US roadways and indicates the direction of the traffic flow regardless of the real heading angle. Required Example northbound (for I-5 North)
vehicle_impact VehicleImpact The impact to vehicular lanes along a single road in a single direction. Required
relationship Relationship Identifies both sequential and hierarchical relationships between the road events and other entities. For example, a relationship can be used to link multiple road events to a common 'parent', such as a project or phase, or identify a sequence of road events Optional
lanes Array; [Lane] A list of individual lanes within a road event (roadway segment) Optional
beginning_cross_street String Name or number of the nearest cross street along the roadway where the event begins. Optional
ending_cross_street String Name or number of the nearest cross street along the roadway where the event ends. Optional
beginning_milepost Number The linear distance measured against a milepost marker along a roadway where the event begins. Optional A milepost or mile marker is a surveyed distance posted along a roadway measuring the length (in miles or tenth of a mile) from the south west to the north east. These markers are typically notated on State and local government digital road networks. See also the lrs_type property on the RoadEventDataSource object.
ending_milepost Number The linear distance measured against a milepost marker along a roadway where the event ends. Optional A milepost or mile marker is a surveyed distance posted along a roadway measuring the length (in miles or tenth of a mile) from the south west to the north east. These markers are typically notated on State and local government digital road networks. See also the lrs_type property on the RoadEventDataSource object.
event_status EventStatus The status of the event. Optional
types_of_work Array; [TypeOfWork] A list of the types of work being done in a road event and an indiciation of if each type results in an architectural change to the roadway. Optional
workers_present Boolean A flag indicating that there are workers present in the event space. Optional
reduced_speed_limit Integer The reduced speed limit posted within the event space. Optional
restrictions Array; [RoadRestriction] Zero or more road restrictions applying to the work zone road segment associated with the work zone. Optional These are included as flags rather than detailed restrictions. Detailed restrictions are coded to specific lanes.
description String Short free text description of work zone. Optional This will be populated with formal phrases in a later WZDx version
creation_date String; date-time The UTC time and date when the activity or event was created. Optional All datetime formats shall follow RFC 3339 Section 5.6. Example: 2016-11-03T19:37:00Z.
update_date String; date-time The UTC time and date when the activity or event was updated. Optional All datetime formats shall follow RFC 3339 Section 5.6. Example: 2016-11-03T19:37:00Z.
road_event_id (DEPRECATED) String This property is deprecated; use the id property on the parent RoadEventFeature object instead — A unique identifier issued by the data feed provider to identify the road event activity. Optional This property will be removed in a future version of WZDx.
road_number (DEPRECATED) String This property is deprecated and will be removed in a future version; include road numbers within the road_names array instead — The road number designated by a jurisdiction such as a county, state, or interstate. Optional Examples I-5, VT 133.
road_name (DEPRECATED) String This property is deprecated and will be removed in a future version; include road names within the road_names array instead — Publicly known name of the road on which the event occurs. Conditional: required if road_names property is not provided.
total_num_lanes (DEPRECATED) Integer This property is deprecated and will be removed in a future version — The total number of lanes associated with the road segment designated by the event geometry. Optional A segment is a part of a roadway in a single direction designated the event geometry.

Used By

Property Object
properties RoadEventFeature

Important Notes

The value of the RoadEvent's data_source_id property MUST match the value of the data_source_id property of a RoadEventDataSource that is included in the same WZDx GeoJSON document.