Mobile CARB/DMV Clean Truck Checks for diesel engines across Northern California. Smoke opacity testing for 2012-and-older engines, OBD testing for 2013-and-newer engines. We come to you.
Heat map of aggregated mobile routes from Google Maps Timeline — overlaid on our nine claimed Clean Truck Check zones. Not street addresses; not a customer list. Real places our trucks have been.
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NorCal CARB Mobile brings Clean Truck Check compliance directly to fleets and operators throughout the region — we come to your yard, job site or fuel island. Pick the zone closest to you for local pricing, freight-corridor coverage and the cities we serve.
Sacramento, Elk Grove, Roseville, Rancho Cordova, Yuba City — plus Placer, Sutter & Yuba counties along I-5, I-80 & Hwy 99.
Oakland, Hayward, Fremont, Union City, San Leandro — Alameda County, the Port of Oakland & the I-880 warehouse belt.
Livermore, Pleasanton, Dublin, Tracy — the I-580 / I-205 / Altamont corridor and the Tracy & Mountain House distribution hubs.
Fairfield, Vacaville, Vallejo, Napa — Solano & Napa counties along I-80, the Port of Benicia & Hwy 29 wine country.
San Jose, Santa Clara, Milpitas, Morgan Hill — Santa Clara County, US-101 & the Silicon Valley construction and logistics corridor.
Stockton, Lodi, Manteca, Lathrop — San Joaquin County, the Port of Stockton & the I-5 / Hwy 99 distribution and ag corridor.
Modesto, Turlock, Merced, Ceres — Stanislaus & Merced counties along Hwy 99: dairy, ag and food-processing fleets.
Fresno, Visalia, Bakersfield — Fresno, Tulare & Kern counties: the nation's biggest ag region, plus Kern oilfield fleets.
Chico, Oroville, Paradise, Gridley, Yuba City up to Red Bluff & Redding — Butte, Glenn, Tehama, Sutter & Yuba counties: rice, almond, logging & construction fleets along Hwy 99 & I-5.
Don't see your city or job site? Call 916-890-4427 — we likely cover it →
Mobile CARB/DMV Clean Truck Check testing for diesel engines — the right test for your vehicle's model year, brought to your location.
On-board diagnostics testing for CARB Clean Truck Check compliance. For 2013-and-newer engines.
Opacity / visual inspection tier of the Clean Truck Check program. Call to confirm the right test for your vehicle.
Exhaust smoke-opacity testing to CARB standards for 2012-and-older diesel engines.
Mobile emissions testing for recreational vehicles and motorhomes — we come to you.
Call or text to book mobile CARB Clean Truck Check testing anywhere across Northern California. Fleet pricing available.
