Clean Truck Check Credentialed Tester

Clean Truck Check in San Jose, CA

34 credentialed testers in San Jose.

Testers in San Jose

View Benjamin Nguyen details

Benjamin Nguyen

1728 Fumia Ct

San Jose, California

(408) 964-8829

MobileOBDOVIOVI tests are required for 2012 and older enginesMotor Home

Trucking activity in Santa Clara 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
381
Trucking employees
3,052

Source: FMCSA MCMIS carrier census, US Census County Business Patterns 2021.

Nearby truck stops

OpenStreetMap-tagged truck stops, services areas, and HGV-marked fuel stations within 25 miles of San Jose. Useful for routing a service stop around your CTC test.

Source: © OpenStreetMap contributors. Last updated 2026-05-18.

Air quality context in and around San Jose

Annual aggregate readings from EPA Air Quality System monitors within about 25 miles of San Jose, 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
4.57 Micrograms/cubic meter (LC)
2 monitors · 22,691 observations · 11 days above standard
Nitrogen dioxide (NO₂)
5.96 Parts per billion
1 monitor · 16,524 observations · 0 days above standard
Ozone (O₃)
0.04 Parts per million
2 monitors · 63,722 observations · 0 days above standard

Source: EPA Air Quality System (AQS) API. Reporting year 2025. Last fetched 2026-05-18.