Federal Highway Administration

The Federal Highway Administration (FHWA) provides stewardship over the construction, maintenance and preservation of the Nations highways, bridges and tunnels. FHWA also conducts research and provides technical assistance to state and local agencies to improve safety, mobility, and to encourage innovation.

Federal Highway Administration publishes 12 API contracts indexed on the APIs.io network, including Authentication API, Configuration Rest Controller API, Deposit API, and 9 more. Tagged areas include Federal Government, Transportation, Highways, Bridge, and Connected Vehicles.

The Federal Highway Administration catalog on APIs.io includes 1 Spectral governance ruleset.

Federal Highway Administration’s developer surface includes authentication, documentation, support, changelog, and 17 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

29.7/100 thin ▬ flat Agent 28/100 agent aware Heartbeat 100/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessPaid

1 published contract 3 Agent Skills

Federal Government TransportationHighwaysBridge Connected Vehicles V2X Open Source Open Data

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 29.7/100 · thin

Contract Quality 8.7 / 19

Developer Ergonomics 4.2 / 15

Access Clarity 0.0 / 15

Operational Transparency 1.8 / 10

Contract Governance 1.2 / 9

Discoverability 4.8 / 8

Regulatory Posture 2.5 / 15

Create-or-Update Ergonomics 2.2 / 10

Agent readiness — 28/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 0 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Government & Public Sector regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)

8 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 0.0 — up to +20.0 composite points
Developer Ergonomics scores 28.0 — up to +14.4 composite points
Contract Quality scores 46.6 — up to +13.4 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/federal-highway-administration/apis.yml: open an issue on github.com/api-evangelist/federal-highway-administration to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
US Federal API Programs (api.data.gov, Login.gov, GSA MAS, FedRAMP)	undeclared	-	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

APIs 12

Individual APIs this provider publishes, each with its own machine-readable definition.

Federal Highway Administration

The Federal Highway Administration provides stewardship over the Nation's highways, bridges and tunnels.

Federal Highway Administration Authentication API

Authentication and authorization for Registration and Deposit endpoints

Federal Highway Administration Configuration Rest Controller API

The configuration-rest-controller API from Federal Highway Administration — 3 operation(s) for configuration-rest-controller.

Federal Highway Administration Deposit API

V2X Message Deposit endpoints for deployment to the ETX MQTT Broker

Federal Highway Administration Geofence Deployments API

Geofence deployment management endpoints

Federal Highway Administration Geofence Expiration API

Geofence expiration management endpoints

Federal Highway Administration Path Management API

Path management endpoints for GeoJSON-like path data

Federal Highway Administration Registration API

ETX client registration and connection management endpoints

Federal Highway Administration Secret Management API

Secret configuration endpoints

Federal Highway Administration TIM Configuration API

TIM ITIS phrases and metadata configuration endpoints

Federal Highway Administration User Limits Management API

Endpoints for managing user registration limits

Federal Highway Administration Vendor Limits Management API

Endpoints for managing vendor-wide registration limits

Scroll for all 12

Agent Skills 3

Packaged agent skills for driving this provider's APIs from an AI assistant.

deposit-v2x-message

AGENT SKILL

manage-etx-registration

AGENT SKILL

manage-registration-limits

AGENT SKILL

Federal Highway Administration API pricing

Pricing Plans 1

Published pricing tiers and plan structures.

Federal Highway Administration Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Federal Highway Administration Rate Limits

0 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Federal Highway Administration Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Federal Highway Administration API Rules

59 rules · 43 errors 12 warnings 4 info

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Federal Highway Administration V2X App Api Overlay

5 actions · update · federal-highway-administration-v2x-app-api-openapi.json

DERIVED

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Federal Highway Administration Authentication

http · 1 scheme

SECURITY

Federal Highway Administration Domain Security

TLSv1.3 · DNSSEC · DMARC

SECURITY

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

AgentSkill

AgentSkill

X-MCPServerCandidate

X-MCPServerCandidate

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

DataModel

Conformance

Lifecycle

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

Support

Support

ChangeLog

ChangeLog

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 2

The organization behind the API

LinkedIn

Website

Website

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: federal-highway-administration
name: Federal Highway Administration
description: The Federal Highway Administration (FHWA) provides stewardship over the construction, maintenance and preservation
  of the Nations highways, bridges and tunnels. FHWA also conducts research and provides technical assistance to state and
  local agencies to improve safety, mobility, and to encourage innovation.
type: Index
deliveryModel:
  model: saas
  license_evidence:
    not_product:
    - usdot-fhwa-stol/v2x-app-api
  open_source: unknown
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: low
  source:
  - openapi
  - pricing
  - repository-not-product
  generated: '2026-09-25'
  method: derived
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: high
  source:
  - finops
  - authentication
  - rate-limits
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/federal-highway-administration.png
access: 3rd-Party
created: '2024-12-03'
modified: '2026-09-09'
position: Consuming
tags:
- Federal Government
- Transportation
- Highways
- Bridge
- Connected Vehicles
- V2X
- Open Source
- Open Data
tags_raw:
- Federal Government
- Transportation
- Highways
- Bridges
- Connected Vehicles
- V2X
- Open Source
- Open Data
- Federal-Government
- Open-Source
url: https://raw.githubusercontent.com/api-evangelist/federal-highway-administration/refs/heads/main/apis.yml
specificationVersion: '0.23'
apis:
- aid: federal-highway-administration:federal-highway-administration
  name: Federal Highway Administration
  tags: []
  humanURL: https://highways.dot.gov
  properties:
  - url: https://highways.dot.gov
    type: Website
  description: The Federal Highway Administration provides stewardship over the Nation's highways, bridges and tunnels.
- aid: federal-highway-administration:federal-highway-administration-authentication-api
  name: Federal Highway Administration Authentication API
  description: Authentication and authorization for Registration and Deposit endpoints
  humanURL: https://highways.dot.gov
  tags:
  - Authentication
  properties:
  - type: OpenAPI
    url: openapi/federal-highway-administration-authentication-api-openapi.yml
  - type: Protobuf
    url: grpc/federal-highway-administration-geohash-routed-msg.proto
  - type: SourceCode
    url: https://github.com/usdot-fhwa-stol/v2x-app-api
  - type: Support
    url: https://github.com/usdot-fhwa-stol/v2x-app-api/issues
- aid: federal-highway-administration:federal-highway-administration-configuration-rest-controller-api
  name: Federal Highway Administration Configuration Rest Controller API
  description: The configuration-rest-controller API from Federal Highway Administration — 3 operation(s) for configuration-rest-controller.
  humanURL: https://highways.dot.gov
  tags:
  - configuration-rest-controller
  properties:
  - type: OpenAPI
    url: openapi/federal-highway-administration-configuration-rest-controller-api-openapi.yml
  - type: Protobuf
    url: grpc/federal-highway-administration-geohash-routed-msg.proto
  - type: SourceCode
    url: https://github.com/usdot-fhwa-stol/v2x-app-api
  - type: Support
    url: https://github.com/usdot-fhwa-stol/v2x-app-api/issues
- aid: federal-highway-administration:federal-highway-administration-deposit-api
  name: Federal Highway Administration Deposit API
  description: V2X Message Deposit endpoints for deployment to the ETX MQTT Broker
  humanURL: https://highways.dot.gov
  tags:
  - Deposit
  properties:
  - type: OpenAPI
    url: openapi/federal-highway-administration-deposit-api-openapi.yml
  - type: Protobuf
    url: grpc/federal-highway-administration-geohash-routed-msg.proto
  - type: SourceCode
    url: https://github.com/usdot-fhwa-stol/v2x-app-api
  - type: Support
    url: https://github.com/usdot-fhwa-stol/v2x-app-api/issues
- aid: federal-highway-administration:federal-highway-administration-geofence-deployments-api
  name: Federal Highway Administration Geofence Deployments API
  description: Geofence deployment management endpoints
  humanURL: https://highways.dot.gov
  tags:
  - Geofence Deployments
  properties:
  - type: OpenAPI
    url: openapi/federal-highway-administration-geofence-deployments-api-openapi.yml
  - type: Protobuf
    url: grpc/federal-highway-administration-geohash-routed-msg.proto
  - type: SourceCode
    url: https://github.com/usdot-fhwa-stol/v2x-app-api
  - type: Support
    url: https://github.com/usdot-fhwa-stol/v2x-app-api/issues
- aid: federal-highway-administration:federal-highway-administration-geofence-expiration-api
  name: Federal Highway Administration Geofence Expiration API
  description: Geofence expiration management endpoints
  humanURL: https://highways.dot.gov
  tags:
  - Geofence Expiration
  properties:
  - type: OpenAPI
    url: openapi/federal-highway-administration-geofence-expiration-api-openapi.yml
  - type: Protobuf
    url: grpc/federal-highway-administration-geohash-routed-msg.proto
  - type: SourceCode
    url: https://github.com/usdot-fhwa-stol/v2x-app-api
  - type: Support
    url: https://github.com/usdot-fhwa-stol/v2x-app-api/issues
- aid: federal-highway-administration:federal-highway-administration-path-management-api
  name: Federal Highway Administration Path Management API
  description: Path management endpoints for GeoJSON-like path data
  humanURL: https://highways.dot.gov
  tags:
  - Path Management
  properties:
  - type: OpenAPI
    url: openapi/federal-highway-administration-path-management-api-openapi.yml
  - type: Protobuf
    url: grpc/federal-highway-administration-geohash-routed-msg.proto
  - type: SourceCode
    url: https://github.com/usdot-fhwa-stol/v2x-app-api
  - type: Support
    url: https://github.com/usdot-fhwa-stol/v2x-app-api/issues
- aid: federal-highway-administration:federal-highway-administration-registration-api
  name: Federal Highway Administration Registration API
  description: ETX client registration and connection management endpoints
  humanURL: https://highways.dot.gov
  tags:
  - Registration
  properties:
  - type: OpenAPI
    url: openapi/federal-highway-administration-registration-api-openapi.yml
  - type: Protobuf
    url: grpc/federal-highway-administration-geohash-routed-msg.proto
  - type: SourceCode
    url: https://github.com/usdot-fhwa-stol/v2x-app-api
  - type: Support
    url: https://github.com/usdot-fhwa-stol/v2x-app-api/issues
- aid: federal-highway-administration:federal-highway-administration-secret-management-api
  name: Federal Highway Administration Secret Management API
  description: Secret configuration endpoints
  humanURL: https://highways.dot.gov
  tags:
  - Secret Management
  properties:
  - type: OpenAPI
    url: openapi/federal-highway-administration-secret-management-api-openapi.yml
  - type: Protobuf
    url: grpc/federal-highway-administration-geohash-routed-msg.proto
  - type: SourceCode
    url: https://github.com/usdot-fhwa-stol/v2x-app-api
  - type: Support
    url: https://github.com/usdot-fhwa-stol/v2x-app-api/issues
- aid: federal-highway-administration:federal-highway-administration-tim-configuration-api
  name: Federal Highway Administration TIM Configuration API
  description: TIM ITIS phrases and metadata configuration endpoints
  humanURL: https://highways.dot.gov
  tags:
  - TIM Configuration
  properties:
  - type: OpenAPI
    url: openapi/federal-highway-administration-tim-configuration-api-openapi.yml
  - type: Protobuf
    url: grpc/federal-highway-administration-geohash-routed-msg.proto
  - type: SourceCode
    url: https://github.com/usdot-fhwa-stol/v2x-app-api
  - type: Support
    url: https://github.com/usdot-fhwa-stol/v2x-app-api/issues
- aid: federal-highway-administration:federal-highway-administration-user-limits-management-api
  name: Federal Highway Administration User Limits Management API
  description: Endpoints for managing user registration limits
  humanURL: https://highways.dot.gov
  tags:
  - User Limits Management
  properties:
  - type: OpenAPI
    url: openapi/federal-highway-administration-user-limits-management-api-openapi.yml
  - type: Protobuf
    url: grpc/federal-highway-administration-geohash-routed-msg.proto
  - type: SourceCode
    url: https://github.com/usdot-fhwa-stol/v2x-app-api
  - type: Support
    url: https://github.com/usdot-fhwa-stol/v2x-app-api/issues
- aid: federal-highway-administration:federal-highway-administration-vendor-limits-management-api
  name: Federal Highway Administration Vendor Limits Management API
  description: Endpoints for managing vendor-wide registration limits
  humanURL: https://highways.dot.gov
  tags:
  - Vendor Limits Management
  properties:
  - type: OpenAPI
    url: openapi/federal-highway-administration-vendor-limits-management-api-openapi.yml
  - type: Protobuf
    url: grpc/federal-highway-administration-geohash-routed-msg.proto
  - type: SourceCode
    url: https://github.com/usdot-fhwa-stol/v2x-app-api
  - type: Support
    url: https://github.com/usdot-fhwa-stol/v2x-app-api/issues
common:
- type: Overlay
  url: overlays/federal-highway-administration-v2x-app-api-overlay.yaml
- type: Authentication
  url: authentication/federal-highway-administration-authentication.yml
- type: DomainSecurity
  url: security/federal-highway-administration-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/FHWA
- type: LinkedIn
  url: https://www.linkedin.com/company/federal-highway-administration
- type: Website
  url: https://highways.dot.gov
- type: Documentation
  url: https://usdot-fhwa-stol.github.io/documentation/
- type: Support
  url: https://github.com/usdot-fhwa-stol/v2x-app-api/issues
- type: Conventions
  url: conventions/federal-highway-administration-conventions.yml
- type: ErrorCatalog
  url: errors/federal-highway-administration-problem-types.yml
- type: DataModel
  url: data-model/federal-highway-administration-data-model.yml
- type: Conformance
  url: conformance/federal-highway-administration-conformance.yml
- type: Lifecycle
  url: lifecycle/federal-highway-administration-lifecycle.yml
- type: ChangeLog
  url: changelog/federal-highway-administration-changelog.yml
- type: Packages
  url: packages/federal-highway-administration-packages.yml
- type: Plans
  url: plans/federal-highway-administration-plans-pricing.yml
- type: RateLimits
  url: rate-limits/federal-highway-administration-rate-limits.yml
- type: FinOps
  url: finops/federal-highway-administration-finops.yml
- type: LLMsTxt
  url: llms/federal-highway-administration-llms.txt
- type: AgentSkill
  url: skills/_index.yml
- type: X-MCPServerCandidate
  url: mcp/federal-highway-administration-mcp.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-enrichment:
  date: '2026-09-09'
  status: enriched
  artifacts_added: 18
  pass: local-v3

Federal Highway Administration API — frequently asked questions

Does Federal Highway Administration have an API?

Yes. APIs.io lists 12 APIs from Federal Highway Administration, including Federal Highway Administration, Federal Highway Administration Authentication API and Federal Highway Administration Configuration Rest Controller API, and 9 more.

Is there an OpenAPI specification for the Federal Highway Administration API?

Yes. APIs.io indexes 11 OpenAPI specifications for Federal Highway Administration, each linked for download from this page.

How do I authenticate with the Federal Highway Administration API?

Federal Highway Administration uses bearer-token authentication (http · 1 scheme). The details are profiled on APIs.io as Federal Highway Administration Authentication.

Is the Federal Highway Administration API ready for AI agents?

Federal Highway Administration has a Kin Score of 29.7 out of 100 (thin) and an Agent Readiness score of 27.7 (agent-aware), scored by API Evangelist on 2026-11-06.

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