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Editorial policy and sources

Last updated October 7, 2026

The rule behind every page: state only what an official source says, show the source’s own words next to it, and date it. If the sources disagree, we show both.

Quoted word for word, checked on every build

  • Every rule, fee, date and exemption is shown with a verbatim line from the agency page or document it comes from and the agency’s name, linked to the page’s list of sources, which gives the address of each source and the day we read it.
  • We keep the text of every source. Each time the site is built, every quoted line on every page is compared with that text (ignoring only spacing, because text taken from PDF files splits words); a line that is not on its source stops the build.
  • Numbers in our own explanations are either quoted or worked out from quoted figures (a sum of fees, a model-year range, a count of listings), and worked-out numbers are labeled as such. Population figures for cities on a county line are 2020 Census counts, and say so.

Pages read through the Internet Archive

Some agency servers (TCEQ, DPS and the Legislature’s site) refuse connections from where this site is built. For those we read the most recent Internet Archive copy of the official page, and say so: “page as published” gives the capture date, and the link opens the archived copy. We do not use a copy that predates the change it describes (for example, nothing about inspections is read from a copy made before January 1, 2025).

Station listings

Texas publishes its list of certified inspection stations only as a search form. Our station listings come from public map listings (Apple Maps and Yelp data, returned by DuckDuckGo’s map search for “emissions testing” and “state inspection station” in each program county), kept only when the listing’s category or name names inspections, emissions testing or smog checks. A listing that has only its name to go on must name a vehicle (state, auto, car, emissions, sticker and the like), because home inspectors use the word “inspection” too. We open every listed website: a dead link is not shown, and a business whose own site describes home or property inspections is removed. A listing with neither a phone number nor a working website is removed. We keep name, address, phone, website and map point; never ratings, reviews, opening hours or photos. A listing is not proof of DPS certification, and every list says so. Last refreshed Oct 7, 2026.

Which pages search engines see

  • Guides are offered to search engines when they have at least 300 words of our own writing (quotes do not count) and at least 2 verified quotes.
  • County pages are offered to search engines; the build checks that no two of them are near-copies (70% or more of their wording shared).
  • City pages exist for cities that lie partly inside and partly outside a program county, when at least 50 residents (2020 Census) live on each side of the line. They are offered to search engines only when at least 500 residents live in the part outside the program and the program-county part has at least 3 station listings.
  • Station listing pages are never offered to search engines: a name, address and phone number is not enough to deserve one.
  • The station finder is not offered to search engines either: its lists load in the browser, so a search engine would see an empty form.

Corrections

See report a correction. When an agency changes a page, we re-read it, update the quote and the date, and change the pages that use it.

The source library

  1. TCEQ, 2024 Fee Analysis for AirCheckTexas Vehicle Emissions Inspection Program (page as published Oct 5, 2025 (archived copy), read Oct 6, 2026)
  2. TCEQ, 2024 Inspection and Maintenance Program Evaluation (page as published Apr 8, 2026 (archived copy), read Oct 6, 2026)
  3. TCEQ, Affidavit, Waivers and Extensions, and the Vehicle Inspection Report (page as published Jun 24, 2026 (archived copy), read Oct 6, 2026)
  4. TCEQ, AirCheckTexas Drive a Clean Machine is Closed (page as published Apr 19, 2026 (archived copy), read Oct 6, 2026)
  5. TCEQ, Highlights of the Vehicle I/M Program (page as published Jun 16, 2026 (archived copy), read Oct 6, 2026)
  6. TCEQ, I/M Rules, Program Reports, and Helpful Links (page as published Sep 21, 2026 (archived copy), read Oct 6, 2026)
  7. TCEQ, Vehicle Emissions Inspection Program Enforcement (page as published Sep 21, 2026 (archived copy), read Oct 6, 2026)
  8. TCEQ, Vehicle Emissions Inspection Types and Certified Analyzers (page as published May 19, 2026 (archived copy), read Oct 6, 2026)
  9. TCEQ, Vehicle Emissions Inspections in Texas (page as published Sep 23, 2026 (archived copy), read Oct 6, 2026)
  10. Texas DPS, 88th Legislation (vehicle inspection) (page as published Mar 6, 2026 (archived copy), read Oct 6, 2026)
  11. Texas DPS, 89th Legislation (vehicle inspection) (page as published Jan 14, 2026 (archived copy), read Oct 6, 2026)
  12. Texas DPS, Bexar County Emission Inspections (FAQ) (page as published Aug 22, 2026 (archived copy), read Oct 6, 2026)
  13. Texas DPS, Cost of Inspection (page as published May 19, 2026 (archived copy), read Oct 6, 2026)
  14. Texas DPS, DPS news release (Bexar County emissions inspections) (page as published Jan 6, 2026 (archived copy), read Oct 6, 2026)
  15. Texas DPS, Emissions Testing (FAQ) (page as published Sep 10, 2026 (archived copy), read Oct 7, 2026)
  16. Texas DPS, General Inspection (FAQ) (page as published May 19, 2026 (archived copy), read Oct 7, 2026)
  17. Texas DPS, ICYMI: Vehicle Safety Inspection Changes Take Effect January 2025 (page as published Mar 6, 2026 (archived copy), read Oct 6, 2026)
  18. Texas DPS, Inspection Criteria: Emission Inspection (page as published Aug 16, 2026 (archived copy), read Oct 6, 2026)
  19. Texas DPS, Military Personnel (vehicle inspection) (page as published Mar 17, 2026 (archived copy), read Oct 6, 2026)
  20. Texas DPS, New to Texas (vehicle inspection) (page as published Mar 6, 2026 (archived copy), read Oct 6, 2026)
  21. Texas DPS, Ready or Not (FAQ on readiness monitors) (page as published Apr 19, 2026 (archived copy), read Oct 7, 2026)
  22. Texas DPS, Recognized Emissions Repair Facilities (RERF) (page as published Jul 19, 2026 (archived copy), read Oct 6, 2026)
  23. Texas DPS, Unique Vehicles (vehicle inspection) (page as published Jul 30, 2026 (archived copy), read Oct 6, 2026)
  24. Texas DPS, Vehicle Emissions Testing Exemptions (FAQ) (page as published Jun 14, 2026 (archived copy), read Oct 6, 2026)
  25. Texas DPS, Vehicle Inspection (page as published Sep 10, 2026 (archived copy), read Oct 7, 2026)
  26. Texas DPS, Vehicle Inspection Program Overview (page as published Aug 16, 2026 (archived copy), read Oct 6, 2026)
  27. Texas DPS, Vehicle Safety Inspection Program Changes Now in Effect (page as published Dec 16, 2025 (archived copy), read Oct 6, 2026)
  28. Texas DPS, Waivers and Time Extensions (page as published Jun 24, 2026 (archived copy), read Oct 6, 2026)
  29. Texas Legislature, H.B. No. 3297 (88th Legislature), enrolled version (page as published Jun 11, 2026 (archived copy), read Oct 6, 2026)
  30. TxDMV, Bexar County Emissions (notice dated 2026-09-15) (read Oct 6, 2026)
  31. TxDMV, Bexar County Tax Office (TxDMV county tax office directory) (read Oct 6, 2026)
  32. TxDMV, Brazoria County Tax Office (TxDMV county tax office directory) (read Oct 6, 2026)
  33. TxDMV, Collin County Tax Office (TxDMV county tax office directory) (read Oct 6, 2026)
  34. TxDMV, Dallas County Tax Office (TxDMV county tax office directory) (read Oct 6, 2026)
  35. TxDMV, Denton County Tax Office (TxDMV county tax office directory) (read Oct 6, 2026)
  36. TxDMV, El Paso County Tax Office (TxDMV county tax office directory) (read Oct 6, 2026)
  37. TxDMV, Ellis County Tax Office (TxDMV county tax office directory) (read Oct 6, 2026)
  38. TxDMV, Fort Bend County Tax Office (TxDMV county tax office directory) (read Oct 6, 2026)
  39. TxDMV, FY 2025 Vehicles Registered and License Fees by County and Regional Office (read Oct 6, 2026)
  40. TxDMV, Galveston County Tax Office (TxDMV county tax office directory) (read Oct 6, 2026)
  41. TxDMV, Harris County Tax Office (TxDMV county tax office directory) (read Oct 6, 2026)
  42. TxDMV, Johnson County Tax Office (TxDMV county tax office directory) (read Oct 6, 2026)
  43. TxDMV, Kaufman County Tax Office (TxDMV county tax office directory) (read Oct 6, 2026)
  44. TxDMV, Montgomery County Tax Office (TxDMV county tax office directory) (read Oct 6, 2026)
  45. TxDMV, New to Texas (read Oct 6, 2026)
  46. TxDMV, Parker County Tax Office (TxDMV county tax office directory) (read Oct 6, 2026)
  47. TxDMV, Register Your Vehicle (read Oct 6, 2026)
  48. TxDMV, Rockwall County Tax Office (TxDMV county tax office directory) (read Oct 6, 2026)
  49. TxDMV, Tarrant County Tax Office (TxDMV county tax office directory) (read Oct 6, 2026)
  50. TxDMV, Travis County Tax Office (TxDMV county tax office directory) (read Oct 6, 2026)
  51. TxDMV, Williamson County Tax Office (TxDMV county tax office directory) (read Oct 6, 2026)
  52. U.S. Census Bureau, TIGERweb county boundaries and incorporated places (January 1, 2026 vintage)