---
title: "Funded road projects + traffic counts (state DOT)"
method: POST
path: "/api/locus_transportation_context"
tags: ["transportation", "projects", "property", "read-only", "free", "free"]
---

# Funded road projects + traffic counts (state DOT)

`POST /api/locus_transportation_context`

## Request

- Base URL: `https://api.locus.report`
- URL: `https://api.locus.report/api/locus_transportation_context`
- Auth: none required

State DOT road projects and AADT stations near a point. full project+traffic: CA, CO, CT, FL, MA, NC, NY, PA, RI, TX, VA, WA; traffic-only: AZ, IL, IN, KY, MD, MI, MN, NJ, OH, OK, OR, SC, TN, UT, WI. Unwired states are not covered. For road-work research, not a noise, safety, or commute finding.
Use this when you can call Locus free tools (REST tools/call or MCP).
Use locus-transportation-context instead when your client can only call paid x402 routes; it returns the same records. Direct flat-body route for this one free resource; no API key, payment, or catalog wrapper. Return only the cited bounded evidence described here; this route never produces a paid brief or full report.

## Request body

- object
  - `address` string: Optional US street address or place; NC uses AddressNC first, other areas use the national geocoder fallback when latitude/longitude are not provided.
  - `latitude` number: Optional decimal latitude; provide with longitude to skip address geocoding.
  - `longitude` number: Optional decimal longitude; provide with latitude to skip address geocoding.
  - `radiusMeters` integer: Optional search radius in meters around the point; default 2000, max 5000.

## Response `200`

Free cited evidence response.

- object

## Other responses

- `400`: Invalid request body.
- `429`: Rate limited.

---

[API](https://skmtc.dev/locus/apis/locus-api.md) · [All operations](https://skmtc.dev/locus/apis/locus-api/llms.txt) · [OpenAPI document](https://skmtc.dev/locus/apis/locus-api/revisions/ba7786b74adb?raw)