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Clean Truck Check in Oklahoma City, OK
4 credentialed testers in Oklahoma City.
Testers in Oklahoma City
FTC Transportation Inc
John Shepard
OBDMotor Home
FTC TRANSPORTATION
Mark Grayson
OBDMotor Home
Test & Truck, LLC
Ronald Green
MobileOBDMotor Home
Trucking activity in Oklahoma County
Clean Truck Check applies to heavy-duty vehicles that operate in California — including out-of-state trucks based here that run loads west.
Trucking establishments
297
Trucking employees
6,620
Source: FMCSA MCMIS carrier census, US Census County Business Patterns 2021.
Air quality context in and around Oklahoma City
Annual aggregate readings from EPA Air Quality System monitors within about 25 miles of Oklahoma City, reporting year 2025. Clean Truck Check exists to reduce real-world emissions from heavy-duty vehicles — the numbers below are the local baseline those rules are designed to improve.
PM2.5
8.27 Micrograms/cubic meter (LC)
4 monitors · 33,691 observations · 51 days above standard
Nitrogen dioxide (NO₂)
12.86 Parts per billion
2 monitors · 31,064 observations · 0 days above standard
Ozone (O₃)
0.05 Parts per million
4 monitors · 99,802 observations · 14 days above standard
Source: EPA Air Quality System (AQS) API. Reporting year 2025. Last fetched 2026-05-18.