openapi: 3.0.0 info: title: Wsdot Highway Alerts API version: 1.0.0 description: Wsdot Highway Alerts API - Washington State Department of Transportation APIs servers: - url: https://www.wsdot.wa.gov/traffic/api/highwayalerts/highwayalertsrest.svc description: Production server components: schemas: RoadwayLocation: type: object properties: Description: type: string nullable: true description: Human-readable description of the roadway location, such as interchange names or cross streets. Direction: type: string nullable: true description: 'Traffic direction designation: N, S, B, NB, or SB, indicating which side of the highway is affected.' Latitude: type: number description: Latitude of the roadway location in decimal degrees. Longitude: type: number description: Longitude of the roadway location in decimal degrees. MilePost: type: number description: Milepost marker along the highway corridor, with 0 indicating route terminus. RoadName: type: string nullable: true description: Highway or route designation code, such as '005' for I-5 or '090' for I-90. required: - Description - Direction - Latitude - Longitude - MilePost - RoadName description: Roadway location information including route, milepost, coordinates, and direction. FetchAlertByIdOutput: type: object properties: AlertID: type: integer description: Numeric ID of the highway alert. County: type: string nullable: true description: County name for countywide alerts, or null when alert is route-specific. EndRoadwayLocation: type: object nullable: true properties: Description: type: string nullable: true description: Human-readable description of the roadway location, such as interchange names or cross streets. Direction: type: string nullable: true description: 'Traffic direction designation: N, S, B, NB, or SB, indicating which side of the highway is affected.' Latitude: type: number description: Latitude of the roadway location in decimal degrees. Longitude: type: number description: Longitude of the roadway location in decimal degrees. MilePost: type: number description: Milepost marker along the highway corridor, with 0 indicating route terminus. RoadName: type: string nullable: true description: Highway or route designation code, such as '005' for I-5 or '090' for I-90. required: - Description - Direction - Latitude - Longitude - MilePost - RoadName description: Roadway location where the alert ends, or null when alert is point-specific or end location is unavailable. EndTime: type: string nullable: true description: UTC datetime when the alert impact is estimated to end, or null when end time is not estimated or alert is ongoing. format: date-time EventCategory: type: string nullable: true description: Category classification for the alert event type, or null when category is unavailable. EventStatus: type: string nullable: true description: 'Code indicating alert status: ''Open'' = active, ''Closed'' = resolved, or null when status is unavailable.' ExtendedDescription: type: string nullable: true description: Additional detailed information about the alert, or null when extended description is unavailable. HeadlineDescription: type: string nullable: true description: Primary description of the alert issue, or null when headline is unavailable. LastUpdatedTime: type: string nullable: true description: UTC datetime when the alert was last modified or updated. format: date-time Priority: type: string nullable: true description: 'Code indicating traffic impact priority: ''Highest'' = severe, ''High'' = significant, ''Medium'' = moderate, ''Low'' = minimal, or null when priority is unavailable.' Region: type: string nullable: true description: 'Code indicating WSDOT region: ''EA'' = Eastern, ''NC'' = North Central, ''NW'' = Northwest, ''OL'' = Olympic, ''SC'' = South Central, ''SW'' = Southwest, or null when region is unavailable.' StartRoadwayLocation: type: object nullable: true properties: Description: type: string nullable: true description: Human-readable description of the roadway location, such as interchange names or cross streets. Direction: type: string nullable: true description: 'Traffic direction designation: N, S, B, NB, or SB, indicating which side of the highway is affected.' Latitude: type: number description: Latitude of the roadway location in decimal degrees. Longitude: type: number description: Longitude of the roadway location in decimal degrees. MilePost: type: number description: Milepost marker along the highway corridor, with 0 indicating route terminus. RoadName: type: string nullable: true description: Highway or route designation code, such as '005' for I-5 or '090' for I-90. required: - Description - Direction - Latitude - Longitude - MilePost - RoadName description: Roadway location where the alert begins, or null when alert is point-specific or start location is unavailable. StartTime: type: string nullable: true description: UTC datetime when the alert impact on traffic began. format: date-time required: - AlertID - County - EndRoadwayLocation - EndTime - EventCategory - EventStatus - ExtendedDescription - HeadlineDescription - LastUpdatedTime - Priority - Region - StartRoadwayLocation - StartTime description: Highway alert with identification, event category, priority, location data, timestamps, and descriptions for traffic incidents and road conditions. parameters: {} paths: /getAlertsAsJson: get: summary: List all current highway alerts statewide. operationId: fetchAlerts tags: - highwayAlerts x-codeSamples: - lang: JavaScript source: |- import { fetchAlerts } from 'ws-dottie/wsdot-highway-alerts/core'; const data = await fetchAlerts({ fetchMode: 'native', validate: true }); console.log(data); responses: '200': description: Success content: application/json: schema: type: array items: type: object properties: AlertID: type: integer description: Numeric ID of the highway alert. County: type: string nullable: true description: County name for countywide alerts, or null when alert is route-specific. EndRoadwayLocation: type: object nullable: true properties: Description: type: string nullable: true description: Human-readable description of the roadway location, such as interchange names or cross streets. Direction: type: string nullable: true description: 'Traffic direction designation: N, S, B, NB, or SB, indicating which side of the highway is affected.' Latitude: type: number description: Latitude of the roadway location in decimal degrees. Longitude: type: number description: Longitude of the roadway location in decimal degrees. MilePost: type: number description: Milepost marker along the highway corridor, with 0 indicating route terminus. RoadName: type: string nullable: true description: Highway or route designation code, such as '005' for I-5 or '090' for I-90. required: - Description - Direction - Latitude - Longitude - MilePost - RoadName description: Roadway location where the alert ends, or null when alert is point-specific or end location is unavailable. EndTime: type: string nullable: true description: UTC datetime when the alert impact is estimated to end, or null when end time is not estimated or alert is ongoing. format: date-time EventCategory: type: string nullable: true description: Category classification for the alert event type, or null when category is unavailable. EventStatus: type: string nullable: true description: 'Code indicating alert status: ''Open'' = active, ''Closed'' = resolved, or null when status is unavailable.' ExtendedDescription: type: string nullable: true description: Additional detailed information about the alert, or null when extended description is unavailable. HeadlineDescription: type: string nullable: true description: Primary description of the alert issue, or null when headline is unavailable. LastUpdatedTime: type: string nullable: true description: UTC datetime when the alert was last modified or updated. format: date-time Priority: type: string nullable: true description: 'Code indicating traffic impact priority: ''Highest'' = severe, ''High'' = significant, ''Medium'' = moderate, ''Low'' = minimal, or null when priority is unavailable.' Region: type: string nullable: true description: 'Code indicating WSDOT region: ''EA'' = Eastern, ''NC'' = North Central, ''NW'' = Northwest, ''OL'' = Olympic, ''SC'' = South Central, ''SW'' = Southwest, or null when region is unavailable.' StartRoadwayLocation: type: object nullable: true properties: Description: type: string nullable: true description: Human-readable description of the roadway location, such as interchange names or cross streets. Direction: type: string nullable: true description: 'Traffic direction designation: N, S, B, NB, or SB, indicating which side of the highway is affected.' Latitude: type: number description: Latitude of the roadway location in decimal degrees. Longitude: type: number description: Longitude of the roadway location in decimal degrees. MilePost: type: number description: Milepost marker along the highway corridor, with 0 indicating route terminus. RoadName: type: string nullable: true description: Highway or route designation code, such as '005' for I-5 or '090' for I-90. required: - Description - Direction - Latitude - Longitude - MilePost - RoadName description: Roadway location where the alert begins, or null when alert is point-specific or start location is unavailable. StartTime: type: string nullable: true description: UTC datetime when the alert impact on traffic began. format: date-time required: - AlertID - County - EndRoadwayLocation - EndTime - EventCategory - EventStatus - ExtendedDescription - HeadlineDescription - LastUpdatedTime - Priority - Region - StartRoadwayLocation - StartTime description: Highway alert with identification, event category, priority, location data, timestamps, and descriptions for traffic incidents and road conditions. examples: sampleResponse: summary: Sample response description: Example of a successful response from the API (showing first item of 118 total) value: - AlertID: 670961 County: null EndRoadwayLocation: Description: null Direction: 'N' Latitude: 48.703758665 Longitude: -122.474705077 MilePost: 250 RoadName: '005' EndTime: '2025-11-21T00:00:00.000Z' EventCategory: Maintenance EventStatus: Open ExtendedDescription: '' HeadlineDescription: Daily from 8 a.m. to 4 p.m. on Wednesday, Nov. 19 and Thursday, Nov. 20, maintenance crews will close one right lane of northbound Interstate 5 from North Lake Samish Overpass (milepost 246) to State Route 11/Chuckanut Drive (milepost 250) for rock removal. LastUpdatedTime: '2025-11-13T20:14:26.087Z' Priority: Medium Region: Northwest StartRoadwayLocation: Description: null Direction: 'N' Latitude: 48.690337506 Longitude: -122.41057518 MilePost: 246.8 RoadName: '005' StartTime: '2025-11-13T20:08:00.000Z' /searchAlertsAsJson?StateRoute={StateRoute}&Region={Region}&SearchTimeStart={SearchTimeStart}&SearchTimeEnd={SearchTimeEnd}&StartingMilepost={StartingMilepost}&EndingMilepost={EndingMilepost}: get: summary: Search highway alerts by route, region, time range, and milepost. operationId: searchAlerts tags: - highwayAlerts x-codeSamples: - lang: JavaScript source: |- import { searchAlerts } from 'ws-dottie/wsdot-highway-alerts/core'; const data = await searchAlerts({ params: { "StateRoute": "405", "StartingMilepost": 10, "EndingMilepost": 20, "SearchTimeStart": "2025-11-21", "SearchTimeEnd": "2025-11-22" }, fetchMode: 'native', validate: true }); console.log(data); responses: '200': description: Success content: application/json: schema: type: array items: type: object properties: AlertID: type: integer description: Numeric ID of the highway alert. County: type: string nullable: true description: County name for countywide alerts, or null when alert is route-specific. EndRoadwayLocation: type: object nullable: true properties: Description: type: string nullable: true description: Human-readable description of the roadway location, such as interchange names or cross streets. Direction: type: string nullable: true description: 'Traffic direction designation: N, S, B, NB, or SB, indicating which side of the highway is affected.' Latitude: type: number description: Latitude of the roadway location in decimal degrees. Longitude: type: number description: Longitude of the roadway location in decimal degrees. MilePost: type: number description: Milepost marker along the highway corridor, with 0 indicating route terminus. RoadName: type: string nullable: true description: Highway or route designation code, such as '005' for I-5 or '090' for I-90. required: - Description - Direction - Latitude - Longitude - MilePost - RoadName description: Roadway location where the alert ends, or null when alert is point-specific or end location is unavailable. EndTime: type: string nullable: true description: UTC datetime when the alert impact is estimated to end, or null when end time is not estimated or alert is ongoing. format: date-time EventCategory: type: string nullable: true description: Category classification for the alert event type, or null when category is unavailable. EventStatus: type: string nullable: true description: 'Code indicating alert status: ''Open'' = active, ''Closed'' = resolved, or null when status is unavailable.' ExtendedDescription: type: string nullable: true description: Additional detailed information about the alert, or null when extended description is unavailable. HeadlineDescription: type: string nullable: true description: Primary description of the alert issue, or null when headline is unavailable. LastUpdatedTime: type: string nullable: true description: UTC datetime when the alert was last modified or updated. format: date-time Priority: type: string nullable: true description: 'Code indicating traffic impact priority: ''Highest'' = severe, ''High'' = significant, ''Medium'' = moderate, ''Low'' = minimal, or null when priority is unavailable.' Region: type: string nullable: true description: 'Code indicating WSDOT region: ''EA'' = Eastern, ''NC'' = North Central, ''NW'' = Northwest, ''OL'' = Olympic, ''SC'' = South Central, ''SW'' = Southwest, or null when region is unavailable.' StartRoadwayLocation: type: object nullable: true properties: Description: type: string nullable: true description: Human-readable description of the roadway location, such as interchange names or cross streets. Direction: type: string nullable: true description: 'Traffic direction designation: N, S, B, NB, or SB, indicating which side of the highway is affected.' Latitude: type: number description: Latitude of the roadway location in decimal degrees. Longitude: type: number description: Longitude of the roadway location in decimal degrees. MilePost: type: number description: Milepost marker along the highway corridor, with 0 indicating route terminus. RoadName: type: string nullable: true description: Highway or route designation code, such as '005' for I-5 or '090' for I-90. required: - Description - Direction - Latitude - Longitude - MilePost - RoadName description: Roadway location where the alert begins, or null when alert is point-specific or start location is unavailable. StartTime: type: string nullable: true description: UTC datetime when the alert impact on traffic began. format: date-time required: - AlertID - County - EndRoadwayLocation - EndTime - EventCategory - EventStatus - ExtendedDescription - HeadlineDescription - LastUpdatedTime - Priority - Region - StartRoadwayLocation - StartTime description: Highway alert with identification, event category, priority, location data, timestamps, and descriptions for traffic incidents and road conditions. examples: sampleResponse: summary: Sample response description: Example of a successful response from the API (showing first item of 14 total) value: - AlertID: 671050 County: null EndRoadwayLocation: Description: null Direction: S Latitude: 0 Longitude: 0 MilePost: 0 RoadName: '405' EndTime: '2025-11-14T15:22:31.000Z' EventCategory: Disabled vehicle EventStatus: Closed ExtendedDescription: '' HeadlineDescription: 'Cleared 7:22 AM : On I-405 southbound at NE 70th Pl (MP 17) there is a disabled vehicle blocking the right lane. The State Patrol has arrived on the scene.' LastUpdatedTime: '2025-11-14T15:22:31.560Z' Priority: Highest Region: Northwest StartRoadwayLocation: Description: null Direction: S Latitude: 47.670427237 Longitude: -122.187174248 MilePost: 17.49 RoadName: '405' StartTime: '2025-11-14T14:54:00.000Z' /getAlertsByRegionIDAsJson?RegionID={RegionID}: get: summary: List highway alerts filtered by WSDOT region ID. operationId: fetchAlertsByRegionId tags: - highwayAlerts x-codeSamples: - lang: JavaScript source: |- import { fetchAlertsByRegionId } from 'ws-dottie/wsdot-highway-alerts/core'; const data = await fetchAlertsByRegionId({ params: { "RegionID": 4 }, fetchMode: 'native', validate: true }); console.log(data); responses: '200': description: Success content: application/json: schema: type: array items: type: object properties: AlertID: type: integer description: Numeric ID of the highway alert. County: type: string nullable: true description: County name for countywide alerts, or null when alert is route-specific. EndRoadwayLocation: type: object nullable: true properties: Description: type: string nullable: true description: Human-readable description of the roadway location, such as interchange names or cross streets. Direction: type: string nullable: true description: 'Traffic direction designation: N, S, B, NB, or SB, indicating which side of the highway is affected.' Latitude: type: number description: Latitude of the roadway location in decimal degrees. Longitude: type: number description: Longitude of the roadway location in decimal degrees. MilePost: type: number description: Milepost marker along the highway corridor, with 0 indicating route terminus. RoadName: type: string nullable: true description: Highway or route designation code, such as '005' for I-5 or '090' for I-90. required: - Description - Direction - Latitude - Longitude - MilePost - RoadName description: Roadway location where the alert ends, or null when alert is point-specific or end location is unavailable. EndTime: type: string nullable: true description: UTC datetime when the alert impact is estimated to end, or null when end time is not estimated or alert is ongoing. format: date-time EventCategory: type: string nullable: true description: Category classification for the alert event type, or null when category is unavailable. EventStatus: type: string nullable: true description: 'Code indicating alert status: ''Open'' = active, ''Closed'' = resolved, or null when status is unavailable.' ExtendedDescription: type: string nullable: true description: Additional detailed information about the alert, or null when extended description is unavailable. HeadlineDescription: type: string nullable: true description: Primary description of the alert issue, or null when headline is unavailable. LastUpdatedTime: type: string nullable: true description: UTC datetime when the alert was last modified or updated. format: date-time Priority: type: string nullable: true description: 'Code indicating traffic impact priority: ''Highest'' = severe, ''High'' = significant, ''Medium'' = moderate, ''Low'' = minimal, or null when priority is unavailable.' Region: type: string nullable: true description: 'Code indicating WSDOT region: ''EA'' = Eastern, ''NC'' = North Central, ''NW'' = Northwest, ''OL'' = Olympic, ''SC'' = South Central, ''SW'' = Southwest, or null when region is unavailable.' StartRoadwayLocation: type: object nullable: true properties: Description: type: string nullable: true description: Human-readable description of the roadway location, such as interchange names or cross streets. Direction: type: string nullable: true description: 'Traffic direction designation: N, S, B, NB, or SB, indicating which side of the highway is affected.' Latitude: type: number description: Latitude of the roadway location in decimal degrees. Longitude: type: number description: Longitude of the roadway location in decimal degrees. MilePost: type: number description: Milepost marker along the highway corridor, with 0 indicating route terminus. RoadName: type: string nullable: true description: Highway or route designation code, such as '005' for I-5 or '090' for I-90. required: - Description - Direction - Latitude - Longitude - MilePost - RoadName description: Roadway location where the alert begins, or null when alert is point-specific or start location is unavailable. StartTime: type: string nullable: true description: UTC datetime when the alert impact on traffic began. format: date-time required: - AlertID - County - EndRoadwayLocation - EndTime - EventCategory - EventStatus - ExtendedDescription - HeadlineDescription - LastUpdatedTime - Priority - Region - StartRoadwayLocation - StartTime description: Highway alert with identification, event category, priority, location data, timestamps, and descriptions for traffic incidents and road conditions. examples: sampleResponse: summary: Sample response description: Example of a successful response from the API value: [] /getAlertsByMapAreaAsJson?MapArea={MapArea}: get: summary: List highway alerts filtered by map area code. operationId: fetchAlertsByMapArea tags: - highwayAlerts x-codeSamples: - lang: JavaScript source: |- import { fetchAlertsByMapArea } from 'ws-dottie/wsdot-highway-alerts/core'; const data = await fetchAlertsByMapArea({ params: { "MapArea": "Seattle" }, fetchMode: 'native', validate: true }); console.log(data); responses: '200': description: Success content: application/json: schema: type: array items: type: object properties: AlertID: type: integer description: Numeric ID of the highway alert. County: type: string nullable: true description: County name for countywide alerts, or null when alert is route-specific. EndRoadwayLocation: type: object nullable: true properties: Description: type: string nullable: true description: Human-readable description of the roadway location, such as interchange names or cross streets. Direction: type: string nullable: true description: 'Traffic direction designation: N, S, B, NB, or SB, indicating which side of the highway is affected.' Latitude: type: number description: Latitude of the roadway location in decimal degrees. Longitude: type: number description: Longitude of the roadway location in decimal degrees. MilePost: type: number description: Milepost marker along the highway corridor, with 0 indicating route terminus. RoadName: type: string nullable: true description: Highway or route designation code, such as '005' for I-5 or '090' for I-90. required: - Description - Direction - Latitude - Longitude - MilePost - RoadName description: Roadway location where the alert ends, or null when alert is point-specific or end location is unavailable. EndTime: type: string nullable: true description: UTC datetime when the alert impact is estimated to end, or null when end time is not estimated or alert is ongoing. format: date-time EventCategory: type: string nullable: true description: Category classification for the alert event type, or null when category is unavailable. EventStatus: type: string nullable: true description: 'Code indicating alert status: ''Open'' = active, ''Closed'' = resolved, or null when status is unavailable.' ExtendedDescription: type: string nullable: true description: Additional detailed information about the alert, or null when extended description is unavailable. HeadlineDescription: type: string nullable: true description: Primary description of the alert issue, or null when headline is unavailable. LastUpdatedTime: type: string nullable: true description: UTC datetime when the alert was last modified or updated. format: date-time Priority: type: string nullable: true description: 'Code indicating traffic impact priority: ''Highest'' = severe, ''High'' = significant, ''Medium'' = moderate, ''Low'' = minimal, or null when priority is unavailable.' Region: type: string nullable: true description: 'Code indicating WSDOT region: ''EA'' = Eastern, ''NC'' = North Central, ''NW'' = Northwest, ''OL'' = Olympic, ''SC'' = South Central, ''SW'' = Southwest, or null when region is unavailable.' StartRoadwayLocation: type: object nullable: true properties: Description: type: string nullable: true description: Human-readable description of the roadway location, such as interchange names or cross streets. Direction: type: string nullable: true description: 'Traffic direction designation: N, S, B, NB, or SB, indicating which side of the highway is affected.' Latitude: type: number description: Latitude of the roadway location in decimal degrees. Longitude: type: number description: Longitude of the roadway location in decimal degrees. MilePost: type: number description: Milepost marker along the highway corridor, with 0 indicating route terminus. RoadName: type: string nullable: true description: Highway or route designation code, such as '005' for I-5 or '090' for I-90. required: - Description - Direction - Latitude - Longitude - MilePost - RoadName description: Roadway location where the alert begins, or null when alert is point-specific or start location is unavailable. StartTime: type: string nullable: true description: UTC datetime when the alert impact on traffic began. format: date-time required: - AlertID - County - EndRoadwayLocation - EndTime - EventCategory - EventStatus - ExtendedDescription - HeadlineDescription - LastUpdatedTime - Priority - Region - StartRoadwayLocation - StartTime description: Highway alert with identification, event category, priority, location data, timestamps, and descriptions for traffic incidents and road conditions. examples: sampleResponse: summary: Sample response description: Example of a successful response from the API value: - AlertID: 473325 County: null EndRoadwayLocation: Description: null Direction: B Latitude: 0 Longitude: 0 MilePost: 0 RoadName: '005' EndTime: null EventCategory: Rest Area EventStatus: Open ExtendedDescription: '' HeadlineDescription: Until further notice - The Interstate 5 Silver Lake Rest Area is closed for maintenance indefinitely. There is no access for recreational vehicle dumping at this location. LastUpdatedTime: '2023-07-24T22:25:55.483Z' Priority: High Region: Northwest StartRoadwayLocation: Description: SB Scale 39/Silver Lake Rest Area Direction: B Latitude: 47.907026048 Longitude: -122.210954765 MilePost: 188.5 RoadName: '005' StartTime: '2021-09-24T13:00:00.000Z' /getAlertAsJson?AlertID={AlertID}: get: summary: Get highway alert details for a specific alert ID. operationId: fetchAlertById tags: - highwayAlerts x-codeSamples: - lang: JavaScript source: |- import { fetchAlertById } from 'ws-dottie/wsdot-highway-alerts/core'; const data = await fetchAlertById({ params: { "AlertID": 468632 }, fetchMode: 'native', validate: true }); console.log(data); responses: '200': description: Success content: application/json: schema: $ref: '#/components/schemas/FetchAlertByIdOutput' examples: sampleResponse: summary: Sample response description: Example of a successful response from the API value: AlertID: 468632 County: null EndRoadwayLocation: Description: null Direction: B Latitude: 47.6390387 Longitude: -122.220590099 MilePost: 5 RoadName: '520' EndTime: null EventCategory: Flammable Cargo Restriction EventStatus: Closed ExtendedDescription: '' HeadlineDescription: Flammable cargo is prohibited on SR 520 eastbound & westbound from Montlake Blvd (MP 1) to 84th Ave NE (MP 5). LastUpdatedTime: '2025-09-03T04:40:03.430Z' Priority: High Region: Northwest StartRoadwayLocation: Description: null Direction: B Latitude: 47.644373883 Longitude: -122.303082155 MilePost: 1 RoadName: '520' StartTime: '2021-09-13T13:59:00.000Z' /getMapAreasAsJson: get: summary: List all available geographic map areas for filtering alerts. operationId: fetchMapAreas tags: - highwayAlerts x-codeSamples: - lang: JavaScript source: |- import { fetchMapAreas } from 'ws-dottie/wsdot-highway-alerts/core'; const data = await fetchMapAreas({ fetchMode: 'native', validate: true }); console.log(data); responses: '200': description: Success content: application/json: schema: type: array items: type: object properties: MapArea: type: string nullable: true description: Map area identifier code for geographic filtering, or null when unavailable. MapAreaDescription: type: string nullable: true description: Display name of the map area, or null when unavailable. required: - MapArea - MapAreaDescription description: Geographic map area with identifier code and display name for filtering highway alerts by region. examples: sampleResponse: summary: Sample response description: Example of a successful response from the API (showing first item of 51 total) value: - MapArea: L2CE MapAreaDescription: Eastern /getEventCategoriesAsJson: get: summary: List all available event category names for filtering alerts. operationId: fetchEventCategories tags: - event-categories x-codeSamples: - lang: JavaScript source: |- import { fetchEventCategories } from 'ws-dottie/wsdot-highway-alerts/core'; const data = await fetchEventCategories({ fetchMode: 'native', validate: true }); console.log(data); responses: '200': description: Success content: application/json: schema: type: array items: type: string examples: sampleResponse: summary: Sample response description: Example of a successful response from the API (showing first item of 123 total) value: - '' tags: - name: highwayAlerts description: Real-time highway alerts for traffic incidents and road conditions. x-description: Traffic incidents, construction, maintenance, and other events affecting Washington State highways, including location details, impact levels, timestamps, and event classifications. x-cacheStrategy: FREQUENT x-useCases: - Monitor real-time traffic incidents and road conditions. - Plan alternate routes based on current highway alerts. - Display active alerts filtered by location, region, or category. - Track alert status and estimated resolution times. x-updateFrequency: 5m - name: alertAreas description: Geographic map areas for filtering highway alerts by region. x-description: Area codes and names used to organize and filter highway alerts across Washington State geographic regions. x-cacheStrategy: FREQUENT x-useCases: - Filter highway alerts by geographic map area. - Obtain valid area codes for alert queries. - Display regional alert organization in user interfaces. x-updateFrequency: 5m - name: event-categories description: Event category classifications for highway alerts. x-description: Standardized category names used to classify and filter highway alerts by incident type, such as construction, collisions, maintenance, and weather events. x-cacheStrategy: FREQUENT x-useCases: - Filter highway alerts by event category type. - Obtain valid category names for alert searches. - Categorize alerts in user interfaces by incident type. x-updateFrequency: 5m