Greenbrier Companies Export API

openapi: 3.2.0
info:
  title: Greenbrier Tank Car Gauge Table Export API
  version: '1.0'
  description: Public, unauthenticated JSON API behind the Greenbrier Gauge Table Directory at https://tankcar.gbrx.com/.
  contact:
    name: The Greenbrier Companies
    url: https://www.gbrx.com/contact/
  x-derived-from: The provider's own published AngularJS client (https://tankcar.gbrx.com/b/js/ngapp, saved verbatim at openapi/_original/greenbrier-cos-tankcar-ngapp-client.js) and its view template (https://tankcar.gbrx.com/app/js/ng/views/home.view.html, saved at openapi/_original/greenbrier-cos-tankcar-home-view.html), with every route, parameter and enum confirmed by live anonymous HTTP request on 2026-09-12.
  x-derived-on: '2026-09-12'
  x-api-evangelist-note: Third-party profile. Greenbrier publishes no OpenAPI for this service. Every path, parameter, enum and response field below was read from the provider's own shipped client code and then confirmed against a live response — nothing is invented. Write methods do not exist on this surface; it is read-only.
servers:
- url: https://tankcar.gbrx.com
  description: Greenbrier Gauge Table Directory
tags:
- name: Export
  description: Downloadable Pdf, Csv and Txt renderings of a gauge table.
paths:
  /export/{fileType}:
    get:
      operationId: exportGaugeTable
      summary: Export a gauge table
      description: Render the gauge tables for a car-number range as a downloadable document. The three file types, two capacity types and two unit types below are the exact values offered by the provider's own export form.
      tags:
      - Export
      parameters:
      - name: fileType
        in: path
        required: true
        description: Output format.
        schema:
          type: string
          enum:
          - Pdf
          - Csv
          - Txt
      - name: capacityType
        in: query
        required: true
        description: Innage measures the liquid column from the bottom of the shell; Outage measures the empty space from the top.
        schema:
          type: string
          enum:
          - Innage
          - Outage
      - name: unitType
        in: query
        required: true
        description: Volume unit of the exported capacities.
        schema:
          type: string
          enum:
          - Gallons
          - Liters
      - name: mark
        in: query
        required: true
        description: The railcar reporting mark.
        schema:
          type: string
      - name: start
        in: query
        required: true
        description: First car number in the range, inclusive.
        schema:
          type: integer
      - name: end
        in: query
        required: true
        description: Last car number in the range, inclusive.
        schema:
          type: integer
      responses:
        '200':
          description: The rendered gauge table document.
          content:
            application/pdf:
              schema:
                type: string
                format: binary
            text/csv:
              schema:
                type: string
                description: Header row `"CAR NUMBER","DISTANCE","INNAGE"` followed by one row per quarter-inch increment.
            text/plain:
              schema:
                type: string