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Clean Truck Check in Tracy, CA
21 credentialed testers in Tracy.
Testers in Tracy
Trucking activity in San Joaquin 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
956
Trucking employees
10,145
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 Tracy. Useful for routing a service stop around your CTC test.
- Boyd Service Center~1 mi
- Flying J Travel CenterFlying J · HGV: yes · ~11 mi
- Flying J Travel CenterFlying J · HGV: yes · ~15 mi
- Love's Travel StopLove's · ~15 mi
- Love's93 South Rogers Road, Patterson, CA 95363Love's · HGV: yes · ~23 mi
- Flying J Travel CenterFlying J · HGV: yes · ~23 mi
+5 more within 25 miles.
Source: © OpenStreetMap contributors. Last updated 2026-05-18.
Air quality context in and around Tracy
Annual aggregate readings from EPA Air Quality System monitors within about 25 miles of Tracy, 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
8.22 Micrograms/cubic meter (LC)
3 monitors · 34,156 observations · 128 days above standard
Nitrogen dioxide (NO₂)
8.62 Parts per billion
2 monitors · 33,016 observations · 0 days above standard
Ozone (O₃)
0.04 Parts per million
3 monitors · 94,923 observations · 2 days above standard
Source: EPA Air Quality System (AQS) API. Reporting year 2025. Last fetched 2026-05-18.