Maricopa County Regional Work Zone Data Exchange (WZDx) v3.0 Feed Sample

datahub.transportation.gov | Last Updated 14 Oct 2020

The WZDx Specification enables infrastructure owners and operators (IOOs) to make harmonized work zone data available for third party use. The intent is to make travel on public roads safer and more efficient through ubiquitous access to data on work zone activity. Specifically, the project aims to get data on work zones into vehicles to help automated driving systems (ADS) and human drivers navigate more safely. MCDOT leads the effort to aggregate and collect work zone data from the AZTech Regional Partners. A continuously updating archive of the WZDx feed data can be found at <a href="http://usdot-its-workzone-public-data.s3.amazonaws.com/index.html" target="_blank" rel="noopener">ITS WorkZone Data Sandbox</a>. The live feed is currently compliant with <a href="https://github.com/usdot-jpo-ode/jpo-wzdx/tree/v3.0" target="_blank" rel="noopener">WZDx specification version 3.0</a>.

Tags: arterial, trucking & motorcoaches, its joint program office (jpo), road conditions, construction feeds, research & statistics, public transit, lane restrictions, roadway & bridges, automobiles, transit, intelligent transportation systems (its), road maintenance, freeway, multi-modal intelligent traffic signal system (mmitss), arizona department of transportation (adot), work zone data exchange (wzdx), maricopa county department of transportation (mcdot), bicycles & pedestrians, work-zone data exchange specification (wzdx), arizona, glendale, tempe, goodyear, scottsdale, avondale, chandler, gilbert, phoenix, mesa

This dataset has the following 51 columns:

Column NameAPI Column NameData TypeDescriptionSample Values
road_event_feed_info_update_datefeed_update_datecalendar_dateThe UTC date and time when the data feed was last updated.
road_event_feed_info_versionroad_event_feed_info_versionnumberThe WZDx specification version used to create the data feed in major.minor format.
road_event_idroad_event_idtextA unique identifier issued by the data feed provider to identify the work zone project or activity.
event_typeevent_typetextThe type/classification of road event.
road_nameroad_nametextPublicly known name of the road on which the event occurs.
road_numberroad_numbertextThe road number designated by a jurisdiction such as a county, state or interstate.
directiondirectiontextThe 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 the traffic flow regardless of the real heading angle.
beginning_cross_streetbeginning_cross_streettextName or number of the nearest cross street along the roadway where the event begins.
ending_cross_streetending_cross_streettextName or number of the nearest cross street along the roadway where the event ends.
beginning_milepostbeginning_milepostnumberThe linear distance measured against a milepost marker along a roadway where the event begins.
ending_milepostending_milepostnumberThe linear distance measured against a milepost marker along a roadway where the event ends.
beginning_accuracybeginning_accuracytextIndicates how the beginning coordinate was defined.
ending_accuracyending_accuracytextIndicates how the ending coordinate was defined.
start_datestart_datetextThe UTC time and date when the event begins.
end_dateend_datecalendar_dateThe UTC time and date when the event ends.
start_date_accuracystart_date_accuracytextA measure of how accurate the start Date Time is.
end_date_accuracyend_date_accuracytextA measure of how accurate the end Date Time is.
event_statusevent_statustextThe status of the event.
total_num_lanestotal_num_lanesnumberThe total number of lanes associated with the road segment designated by the event geometry.
vehicle_impactvehicle_impacttextThe impact to vehicular lanes along a single road in a single direction.
workers_presentworkers_presentcheckboxA flag indicating that there are workers present in the event space.
reduced_speed_limitreduced_speed_limitnumberThe reduced speed limit posted within the event space.
restrictionsrestrictionstextOne or more road restrictions applying to the work zone road segment associated with the work zone delimited by semicolons.
descriptiondescriptiontextShort free text description of road event.
creation_datecreation_datecalendar_dateThe UTC time and date when the activity or event was created.
update_dateupdate_datecalendar_dateThe UTC time and date when the activity or event was updated.
types_of_worktypes_of_worktextStringified array of JSON objects indicating the type of work being done in a road event, if applicable (e.g. typical work zones), as well as noting if the type of work will result in an architectural change to the roadway. Each JSON object can contain the following fields: “type_of_work_id” - ID identifying the types_of_work record; “type_name” - a high-level text description of the type of work being done; “is_architectural_change” - an optional boolean flag indicating whether the type of work will result in an architectural change to the roadway.
laneslanestextStringified array of JSON objects identifying and describing individual lanes within a road event. Each lane JSON object can contain the following fields: “order” - The position of a lane in sequence on the roadway. This value is used as an index to indicate the order of all WZDx lanes provided for a road event; “type” - an indication of the type of lane or shoulder.); “status” - status of the lane for the traveling public; “lane_number” - the number assigned to the lane to help identify its position. Flexible, but usually used for regular, driveable lanes; “restrictions” - an array of lane_restriction JSON objects. Each lane_restriction JSON object contain the following fields: “restriction_type” - the type of restriction being enforced; “restriction_value” - the measure of the restriction type; “restriction_units” - units of measure for the restriction value. The “restriction_type” field of the lane_restriction JSON object is required. The “order”, “type”, and “status” fields of the lane JSON object are required.
geometry_linestringgeometry_linestringlineA coordinate pair or an array of coordinates. In either case, the first coordinate is the beginning point and the last coordinate is the ending point of the road event.
geometry_multipointgeometry_multipointmultipointA coordinate pair or an array of coordinates. In either case, the first coordinate is the beginning point and the last coordinate is the ending point of the road event.
strokestroketextThe color of the GeoJSON stroke.
stroke-widthstroke_widthnumberThe width of the GeoJSON stroke.
stroke-opacitystroke_opacitynumberThe opacity of the GeoJSON stroke.
relationship_firstrelationship_firsttextArray of IDs indicating the first (can be multiple) road event in a sequence of road events by road_event_id.
relationship_nextrelationship_nexttextArray of IDs indicating the next (can be multiple) road event in a sequence by road_event_id.
relationship_parentsrelationship_parentstextArray of IDs indicating entities that the road event with this relationship is a part of, such as a work zone project or phase.
relationship_childrenrelationship_childrentextArrays of IDs indicating entities that are part of the road event with this relationship, such as a detour or piece of equipment.
road_event_feed_info_publisherroad_event_feed_info_publishertextThe organization responsible for publishing the feed.
road_event_feed_info_update_frequencyroad_event_feed_info_update_1numberThe frequency in seconds at which the data feed is updated.
road_event_feed_info_contact_nameroad_event_feed_info_contacttextThe name of the individual or group responsible for the data feed.
road_event_feed_info_contact_emailroad_event_feed_info_contact_1textThe email address of the individual or group responsible for the data feed.
data_source_iddata_source_idtextUnique identifier for the organization providing work zone data.
data_source_organization_namedata_source_organizationtextThe name of the organization for the authoritative source of the work zone data.
data_source_location_methoddata_source_location_methodtextThe typical method used to locate the beginning and end of a work zone impact area.
data_source_contact_namedata_source_contact_nametextThe name of the individual or group responsible for the work zone data source.
data_source_contact_emaildata_source_contact_emailtextThe email address of the individual or group responsible for the data source.
data_source_update_datedata_source_update_datecalendar_dateThe UTC date and time when the data source was last updated.
data_source_update_frequencydata_source_update_frequencynumberThe frequency in seconds at which the data source is updated.
data_source_location_verify_methoddata_source_location_verifytextThe method used to verify the accuracy of the location information.
data_source_lrs_typedata_source_lrs_typetextDescribes the type of linear referencing system (LRS) used for the milepost measurements.
data_source_lrs_urldata_source_lrs_urlurlA URL where additional information on the LRS information and transformation information is stored.