U.S. Department of Transportation

aid: us-dot
url: https://raw.githubusercontent.com/api-evangelist/us-dot/refs/heads/main/apis.yml
name: U.S. Department of Transportation
kind: company
description: 'The U.S. Department of Transportation (DOT) is the federal transportation regulator for the United States, the
  deepest travel market in the world. In aviation DOT is not a participant in the distribution chain — it is the counterweight
  to it: through the Office of the Secretary it writes and enforces 14 CFR Part 256 on electronic airline information systems
  (explicitly naming global distribution systems, corporate booking tools and internet flight search tools), Part 257 on code-share
  disclosure, Part 250 on oversales, Part 259 on enhanced passenger protections, Part 260 on fare and ancillary fee refunds,
  and 399.84 on full-fare advertising. Its Bureau of Transportation Statistics is the sole authoritative source for US airline
  economics — T-100 segment traffic, Form 41 financials, the Consumer Airfare Report city-pair fare tables, denied boardings
  and mishandled baggage — published as free Socrata SODA APIs. Its Federal Aviation Administration operates a Gravitee API
  portal at api.faa.gov whose public catalog is enumerable without login and serves genuinely open, unauthenticated OpenAPI
  3.0.1 services for national airspace delay status and aeronautical chart product releases, alongside gated APIs for pilot
  records and safety reporting. Beyond aviation the operating administrations each run their own surface: NHTSA publishes
  anonymous vehicle, recall, complaint and safety-rating APIs; FRA publishes SOAP/WSDL rail safety services; FMCSA issues
  the department''s only self-serve API key behind a Login.gov account. API posture, honestly: transportation.gov itself is
  bot-blocked (HTTP 403 to any non-browser client) and publishes no departmental OpenAPI, there is no OAuth, no idempotency
  key, no RFC 9457 errors, no Sunset headers and no security.txt anywhere — but the data surfaces underneath are open, unmetered,
  public domain and fully bulk-exportable. This is a provider with an excellent exit path and no commercial lock-in of any
  kind.'
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/dot.png
tags:
- Travel
- United States
- Aviation
- Airlines
- Airports
- Government
- Regulator
- Distribution
- Aviation Consumer Protection
- Open Data
- Transportation
- Safety
- Statistics
- Automotive
- Rail
created: '2026-07-28'
modified: '2026-07-28'
specificationVersion: '0.19'
apis:
- aid: us-dot:faa-airport-status-web-service
  name: FAA Airport Status Web Service (ASWS)
  description: Real-time National Airspace System delay and airport status service operated by the Federal Aviation Administration,
    a DOT operating administration. Two GET operations return current ground delays, ground stops, arrival/departure delays
    and closures across supported US airports, and per-airport status keyed by IATA or ICAO code. Verified anonymously with
    HTTP 200 on 2026-07-28 — no API key, no registration, no terms acceptance. Responses carry both IATA (JFK) and ICAO (KJFK)
    identifiers.
  humanURL: https://api.faa.gov/s/
  baseURL: https://external-api.faa.gov/asws/api
  tags:
  - Aviation
  - Airports
  - Delays
  - Air Traffic
  - FAA
  properties:
  - type: OpenAPI
    url: openapi/us-dot-faa-airport-status-web-service-openapi.yml
  - type: Overlay
    url: overlays/us-dot-faa-airport-status-web-service-overlay.yaml
  - type: Documentation
    url: https://api.faa.gov/s/
  - type: AgentSkill
    name: Check US airport delays and ground stops
    url: skills/us-dot-check-airport-delays.md
- aid: us-dot:faa-aeronautic-product-release-api
  name: FAA Aeronautic Product Release API (APRA)
  description: FAA aeronautical chart and data publication download API. Thirty-four GET operations expose edition metadata
    and ZIP product downloads for the digital Terminal Procedures Publication (dTPP), IFR enroute and oceanic charts, VFR
    charts, the Coded Instrument Flight Procedures data set, the NFDC/NASR 28-day airspace subscription, the Digital Obstacle
    File and more. Verified anonymously with HTTP 200 on 2026-07-28 against /apra/nfdc/nasr/info and /apra/dtpp/info — no
    API key required. Two operations (getDERSRelease, getDERSEdition) are marked deprecated in the spec.
  humanURL: https://api.faa.gov/s/
  baseURL: https://external-api.faa.gov/apra
  tags:
  - Aviation
  - Charts
  - Aeronautical Data
  - Airspace
  - FAA
  properties:
  - type: OpenAPI
    url: openapi/us-dot-faa-aeronautic-product-release-api-openapi.yml
  - type: Overlay
    url: overlays/us-dot-faa-aeronautic-product-release-api-overlay.yaml
  - type: Documentation
    url: https://www.faa.gov/air_traffic/flight_info/aeronav/digital_products/
  - type: AgentSkill
    name: Download FAA aeronautical charts and airspace data
    url: skills/us-dot-download-aeronautical-products.md
- aid: us-dot:faa-air-carrier-prd-api
  name: FAA Air Carrier Pilot Records Database (PRD) API
  description: Data submission API for the FAA Pilot Records Database. Five paths covering pilot record create/update/delete,
    pilot data tracking, and asynchronous pilot data search request and response. Access is restricted by the FAA to operators
    under 14 CFR Part 121, 135, 125, 91K, Air Tour, Public Aircraft, or Part 91 Corporate — this is an accreditation-style
    gate, not a self-serve signup. Credentials are client_id and client_secret request headers declared as ordinary parameters,
    not as securitySchemes. The OpenAPI 3.0.0 definition is published openly in the FAA portal catalog and was harvested verbatim.
  humanURL: https://api.faa.gov/s/
  baseURL: https://external.apic4e.faa.gov
  tags:
  - Aviation
  - Pilot Records
  - Airlines
  - Compliance
  - FAA
  properties:
  - type: OpenAPI
    url: openapi/us-dot-faa-air-carrier-prd-api-openapi.yml
  - type: Overlay
    url: overlays/us-dot-faa-air-carrier-prd-overlay.yaml
  - type: Documentation
    url: https://api.faa.gov/s/
  - type: GettingStarted
    url: https://www.faa.gov/regulationspolicies/pilotrecordsdatabase/air-carrier-api-discover-learn-get-access
- aid: us-dot:faa-safety-assurance-system-api
  name: FAA Safety Assurance System (SAS) API
  description: Single-operation submission API for passenger discrepancy reporting into the FAA Safety Assurance System. Air
    carriers submit hazardous-material discrepancies discovered on passengers or in passenger baggage. The harvested OpenAPI
    3.0.0 declares apiKey and appId security schemes (X-API-KEY plus X-APP-ID), so a credential is required; the definition
    itself is published openly in the FAA portal catalog. The request body carries passenger PII and a PNR locator and is
    the most sensitive payload in the DOT surface area.
  humanURL: https://api.faa.gov/s/
  baseURL: https://external.apic4e.faa.gov/axh-sasp-api/sas
  tags:
  - Aviation
  - Safety
  - Compliance
  - FAA
  properties:
  - type: OpenAPI
    url: openapi/us-dot-faa-safety-assurance-system-api-openapi.yml
  - type: Overlay
    url: overlays/us-dot-faa-safety-assurance-system-overlay.yaml
  - type: Examples
    url: examples/_index.yml
  - type: Documentation
    url: https://api.faa.gov/s/
  - type: AgentSkill
    name: Submit a passenger hazmat discrepancy to the FAA SAS
    url: skills/us-dot-submit-sas-discrepancy.md
- aid: us-dot:faa-data-catalog-ckan-api
  name: FAA Data Catalog (CKAN Action API v3)
  description: The Federal Aviation Administration's open data catalog, running CKAN 2.11.4 and exposing the full CKAN Action
    API v3 anonymously at /api/3/action/. package_list, package_search, package_show, organization_list and status_show all
    answer without a credential; verified 2026-07-28. The catalog also publishes a Project Open Data / DCAT-US 1.1 document
    at /data.json, harvested to well-known/us-dot-faa-catalog-data.json. Small — six datasets — but it is the only CKAN surface
    in the department and the only one with a documented, self-describing action API (help_show returns the parameter contract
    per action).
  humanURL: https://catalog.data.faa.gov/
  baseURL: https://catalog.data.faa.gov/api/3
  tags:
  - Open Data
  - Aviation
  - Catalog
  - CKAN
  - FAA
  properties:
  - type: Documentation
    url: https://docs.ckan.org/en/2.11/api/
  - type: Portal
    url: https://catalog.data.faa.gov/
  - type: APICatalog
    url: https://catalog.data.faa.gov/data.json
  - type: License
    url: https://www.usa.gov/government-works
- aid: us-dot:dot-data-hub-soda-api
  name: DOT Data Hub Open Data API
  description: The departmental open data platform, served from both data.transportation.gov and datahub.transportation.gov
    on Socrata SODA 2.1. For travel and aviation this is where the DOT Office of the Assistant Secretary for Aviation and
    International Affairs publishes the Consumer Airfare Report city-pair fare tables (Tables 1, 1a, 2, 5, 6 and 7), the Airline
    Quarterly Financial Review, and international seat and passenger reports. 1,542 datasets enumerated in the DCAT-US 1.1
    document at /data.json. Datasets are licensed Public Domain U.S. Government (USGOV_WORKS). Verified anonymously with HTTP
    200 on 2026-07-28 against /resource/4f3n-jbg2.json and /resource/tfrh-tu9e.json — no app token required for the volumes
    tested.
  humanURL: https://data.transportation.gov/
  baseURL: https://datahub.transportation.gov/resource
  tags:
  - Open Data
  - Aviation
  - Airfares
  - Airlines
  - Statistics
  properties:
  - type: Documentation
    url: https://dev.socrata.com/docs/endpoints.html
  - type: APIReference
    url: https://dev.socrata.com/docs/queries/
  - type: Portal
    url: https://data.transportation.gov/
  - type: Portal
    url: https://datahub.transportation.gov/
  - type: APICatalog
    url: https://data.transportation.gov/data.json
  - type: StatusPage
    url: https://status.socrata.com/
  - type: License
    url: https://www.usa.gov/government-works
  - type: AgentSkill
    name: Query BTS and DOT open data with SoQL
    url: skills/us-dot-query-bts-aviation-statistics.md
- aid: us-dot:bts-open-data-soda-api
  name: Bureau of Transportation Statistics Open Data API
  description: The Bureau of Transportation Statistics open data platform on Socrata SODA 2.1, and the authoritative record
    of US commercial aviation activity. Aviation holdings verified live include T-100 segment summaries by carrier, country,
    origin airport and month; Air Carrier Financial (Form 41) fuel, revenue, employee and fleet-age series; average air fare
    by carrier and by quarter; commercial aviation mishandled baggage and mishandled wheelchairs and scooters; and involuntary
    denied boardings by airline. 420 datasets enumerated in the DCAT-US 1.1 document at /data.json. Verified anonymously with
    HTTP 200 on 2026-07-28 against /resource/bu82-4pwz.json, /resource/6u8d-47ih.json and /resource/xyfb-hgtv.json.
  humanURL: https://data.bts.gov/
  baseURL: https://data.bts.gov/resource
  tags:
  - Open Data
  - Aviation
  - Airlines
  - Statistics
  - BTS
  properties:
  - type: Documentation
    url: https://dev.socrata.com/docs/endpoints.html
  - type: APIReference
    url: https://dev.socrata.com/docs/queries/
  - type: Portal
    url: https://data.bts.gov/
  - type: APICatalog
    url: https://data.bts.gov/data.json
  - type: StatusPage
    url: https://status.socrata.com/
  - type: BulkData
    url: https://www.transtats.bts.gov/
  - type: License
    url: https://www.usa.gov/government-works
- aid: us-dot:nhtsa-vpic-api
  name: NHTSA vPIC (Vehicle Product Information Catalog) API
  description: The National Highway Traffic Safety Administration's Vehicle Product Information Catalog and VIN decoder, and
    the most widely consumed API in the department. Decodes any US-market VIN into make, model, model year, body class, engine,
    plant and safety-equipment fields, and enumerates the full manufacturer, make, model and vehicle-type reference data behind
    it. Verified anonymously with HTTP 200 on 2026-07-28 — DecodeVinValues returned a decoded 2011 BMW VIN and getallmakes
    returned 12,306 makes. No API key, no registration, no rate charge. Responses support format=json or format=xml. NHTSA
    publishes no OpenAPI for it; the reference is HTML at vpic.nhtsa.dot.gov/api/.
  humanURL: https://vpic.nhtsa.dot.gov/api/
  baseURL: https://vpic.nhtsa.dot.gov/api/vehicles
  tags:
  - Automotive
  - Vehicles
  - VIN
  - Safety
  - NHTSA
  - Open Data
  properties:
  - type: Documentation
    url: https://vpic.nhtsa.dot.gov/api/
  - type: APIReference
    url: https://vpic.nhtsa.dot.gov/api/
- aid: us-dot:nhtsa-safety-api
  name: NHTSA Safety API (recalls, complaints, safety ratings)
  description: 'The NHTSA public safety API that powers the dynamic search applications on nhtsa.gov. Three families: /recalls
    for safety recalls by vehicle or campaign number, /complaints for consumer complaints filed with NHTSA (each with ODI
    number, crash and fire flags, injury and death counts and incident dates), and /SafetyRatings for the New Car Assessment
    Program 5-Star Safety Ratings walked by model year, make and model. Verified anonymously with HTTP 200 on 2026-07-28 —
    complaintsByVehicle for a 2020 Honda Accord returned 341 records and /SafetyRatings returned 37 model years. No API key.
    Governed by the NHTSA API Use Policy published at the base host.'
  humanURL: https://www.nhtsa.gov/nhtsa-datasets-and-apis
  baseURL: https://api.nhtsa.gov
  tags:
  - Automotive
  - Recalls
  - Safety
  - Consumer Protection
  - NHTSA
  - Open Data
  properties:
  - type: Documentation
    url: https://www.nhtsa.gov/nhtsa-datasets-and-apis
  - type: TermsOfService
    url: https://api.nhtsa.gov/
- aid: us-dot:fra-safety-data-api
  name: FRA Safety Data Web Services
  description: The Federal Railroad Administration's rail safety web services, and the only SOAP surface in the department.
    Two WSDL 1.1 contracts were retrieved live and harvested verbatim on 2026-07-28. The Master Web Service (DatadownloadService.asmx,
    30 operations) exposes the Rail Equipment Accident/Incident Report (Form 54), the Highway-Rail Grade Crossing Accident/Incident
    Report (Form 57), Form 55 and 55a, grade crossing inventory, defect and PHMSA defect data, hazmat shipper data and railroad
    reference data, each retrievable by railroad or by state, plus per-form schema operations. The Lite API (LiteApiService.asmx,
    5 operations) returns casualty, enforcement, summary, ten-year and train accident series by year. Declared a pilot by
    FRA. Accounts are requested by email to RsisSupport@dot.gov — the Master service and the Lite API require separate requests.
  humanURL: https://safetydata.fra.dot.gov/MasterWebService/FRASafetyDataAPIs.aspx
  baseURL: https://safetydata.fra.dot.gov/MasterWebService
  tags:
  - Rail
  - Safety
  - Accidents
  - Grade Crossings
  - FRA
  - SOAP
  properties:
  - type: WSDL
    name: FRA Master Web Service (Data Download)
    url: wsdl/us-dot-fra-datadownload-service.wsdl
  - type: WSDL
    name: FRA Lite API Service
    url: wsdl/us-dot-fra-lite-api-service.wsdl
  - type: Documentation
    url: https://safetydata.fra.dot.gov/MasterWebService/FRASafetyDataAPIs.aspx
  - type: TermsOfService
    url: https://safetydata.fra.dot.gov/MasterWebService/Terms.aspx
  - type: BulkData
    url: https://safetydata.fra.dot.gov/OfficeofSafety/publicsite/on_the_fly_download.aspx
- aid: us-dot:fmcsa-qcmobile-api
  name: FMCSA QCMobile API
  description: 'The Federal Motor Carrier Safety Administration''s carrier data API — real-time queries on motor carrier registration,
    authority and safety data, including all of the passenger carrier data that used to be served by the retired SaferBus
    API. RESTful, keyed by a free webKey query parameter. This is the only self-serve API credential anywhere in the department:
    create a Login.gov account, sign in to the FMCSA developer site and generate a key. The developer site publishes a quick
    start guide, an API access guide, the QCMobile API reference and an API response element reference. FMCSA publishes no
    OpenAPI.'
  humanURL: https://mobile.fmcsa.dot.gov/QCDevsite/
  baseURL: https://mobile.fmcsa.dot.gov/qc/services
  tags:
  - Trucking
  - Motor Carriers
  - Safety
  - Compliance
  - FMCSA
  properties:
  - type: DeveloperPortal
    url: https://mobile.fmcsa.dot.gov/QCDevsite/
  - type: Documentation
    url: https://mobile.fmcsa.dot.gov/QCDevsite/docs/qcApi
  - type: GettingStarted
    url: https://mobile.fmcsa.dot.gov/QCDevsite/docs/getStarted
  - type: APIReference
    url: https://mobile.fmcsa.dot.gov/QCDevsite/docs/apiElements
  - type: SignUp
    url: https://mobile.fmcsa.dot.gov/QCDevsite/logingovInfo
  - type: Support
    url: https://mobile.fmcsa.dot.gov/QCDevsite/docs/support
- aid: us-dot:its-jpo-ode-rest-api
  name: USDOT ITS JPO Operational Data Environment (ODE) REST API
  description: 'The reference connected-vehicle data platform authored by the USDOT Intelligent Transportation Systems Joint
    Program Office. Eight operations over SAE J2735 messaging — Traveler Information Message query, create, update and delete
    against physical roadside units, Probe Data Management deposit, SNMP query and on-board-unit log upload. This is DEPLOYABLE
    SOFTWARE, not a DOT-hosted service: the Swagger 2.0 host is the literal placeholder "yourhostname" and an operator runs
    it on its own infrastructure under Apache 2.0. The REST API is the thin edge of a Kafka platform whose 35 topics are declared
    in the ODE''s own configuration and captured as an AsyncAPI 3.0 document here. Safety-critical — the TIM writes change
    what roadside units broadcast to vehicles, and there is no idempotency key anywhere on the surface.'
  humanURL: https://github.com/usdot-jpo-ode/jpo-ode
  baseURL: https://github.com/usdot-jpo-ode/jpo-ode
  tags:
  - Connected Vehicles
  - ITS
  - Roadside Units
  - SAE J2735
  - Safety
  - Kafka
  properties:
  - type: OpenAPI
    url: openapi/us-dot-its-jpo-ode-rest-api-openapi.yml
  - type: Overlay
    url: overlays/us-dot-its-jpo-ode-rest-api-overlay.yaml
  - type: AsyncAPI
    url: asyncapi/us-dot-its-jpo-ode-asyncapi.yml
  - type: Protobuf
    name: Geo-routed MEC deposit message
    url: grpc/us-dot-ode-geoRoutedMsg.proto
  - type: Protobuf
    name: Geohash-routed MEC deposit message
    url: grpc/us-dot-ode-geoHashRoutedMsg.proto
  - type: SourceCode
    url: https://github.com/usdot-jpo-ode/jpo-ode
  - type: License
    url: https://github.com/usdot-jpo-ode/jpo-ode/blob/master/LICENSE
  - type: AgentSkill
    name: Deposit a Traveler Information Message to a roadside unit (ODE)
    url: skills/us-dot-deposit-tim-to-roadside-unit.md
common:
- type: Website
  url: https://www.transportation.gov/
- type: DeveloperPortal
  url: https://www.transportation.gov/developer
- type: Portal
  url: https://api.faa.gov/s/
- type: Portal
  url: https://data.transportation.gov/
- type: Portal
  url: https://data.bts.gov/
- type: Documentation
  url: https://api.faa.gov/s/
- type: APIReference
  url: https://dev.socrata.com/docs/queries/
- type: GettingStarted
  url: https://mobile.fmcsa.dot.gov/QCDevsite/docs/getStarted
- type: Support
  url: https://api.faa.gov/s/help
- type: Blog
  url: https://www.transportation.gov/blog
- type: SignUp
  url: https://mobile.fmcsa.dot.gov/QCDevsite/logingovInfo
- type: TermsOfService
  url: https://www.transportation.gov/web-policies
- type: PrivacyPolicy
  url: https://www.transportation.gov/privacy
- type: Security
  url: https://www.transportation.gov/vulnerability-disclosure-policy
- type: VulnerabilityDisclosure
  url: security/us-dot-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/us-dot-domain-security.yml
- type: Authentication
  url: authentication/us-dot-authentication.yml
- type: Conventions
  url: conventions/us-dot-conventions.yml
- type: ErrorCatalog
  url: errors/us-dot-problem-types.yml
- type: Lifecycle
  url: lifecycle/us-dot-lifecycle.yml
- type: StatusPage
  url: https://status.socrata.com/
- type: ChangeLog
  url: changelog/us-dot-changelog.yml
- type: Conformance
  url: conformance/us-dot-conformance.yml
- type: DataModel
  url: data-model/us-dot-data-model.yml
- type: Examples
  url: examples/_index.yml
- type: Packages
  url: packages/us-dot-packages.yml
- type: WellKnown
  url: well-known/us-dot-well-known.yml
- type: APICatalog
  url: https://data.transportation.gov/data.json
- type: LLMsTxt
  url: llms/us-dot-llms.txt
- type: AgenticAccess
  url: agentic-access/us-dot-agentic-access.yml
- type: AgentSkill
  url: skills/_index.yml
- type: ToolCrosswalk
  url: mcp/us-dot-tool-crosswalk.yml
- type: AsyncAPI
  url: asyncapi/us-dot-its-jpo-ode-asyncapi.yml
- type: JSONSchema
  name: WZDx 4.2 Work Zone Feed
  url: json-schema/us-dot-wzdx-4.2-workzonefeed.json
- type: JSONSchema
  name: WZDx 4.2 Device Feed
  url: json-schema/us-dot-wzdx-4.2-devicefeed.json
- type: JSONSchema
  name: WZDx 4.2 Road Event Feature
  url: json-schema/us-dot-wzdx-4.2-roadeventfeature.json
- type: JSONSchema
  name: WZDx 4.2 Feed Info
  url: json-schema/us-dot-wzdx-4.2-feedinfo.json
- type: JSONSchema
  name: WZDx 4.2 Bounding Box
  url: json-schema/us-dot-wzdx-4.2-boundingbox.json
- type: JSONSchema
  name: WZDx 4.2 Direction
  url: json-schema/us-dot-wzdx-4.2-direction.json
- type: BulkData
  url: https://www.transtats.bts.gov/
- type: BulkData
  url: https://registry.faa.gov/database/ReleasableAircraft.zip
- type: GitHubOrganization
  url: https://github.com/usdot-jpo-ode
- type: X
  url: https://x.com/USDOT
- type: License
  url: https://www.usa.gov/government-works
- type: Regulation
  url: https://www.ecfr.gov/current/title-14/chapter-II/subchapter-A/part-256
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com