--- title: "Michael's Transportation Service Inc. — Clean Truck Check, Vallejo, CA" description: "Michael's Transportation Service Inc. in Vallejo, CA is on CARB's Clean Truck Check tester list. Phone, address and nearby testers." url: "https://ctcfinder.com/tester/michaels-transportation-service-inc-vallejo/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # Michael's Transportation Service Inc. Clean Truck Check tester in Vallejo, CA (Solano County). > CTC Finder is an independent directory, not affiliated with CARB. Tester data: CARB Clean Truck Check public tester list, last checked November 1, 2026. Confirm services, hours and prices with the tester. | Field | Value | |---|---| | Location | 140 Yolano Dr, Vallejo, CA 94589 | | County | Solano County | | Phone | (707) 712-6713 | | Mobile testing | No | | OBD testing | No | | Smoke opacity (non-OBD) | No | | Motorhomes | No | | Credentialed testers | 1 | | Last verified | 2026-11-01 | ## Which trucks Michael's Transportation Service Inc. can test | Your vehicle | Test required | This tester | |---|---|---| | Diesel, model year 2013 or newer | OBD scan | Not listed | | Alternative fuel (natural gas, propane), 2018 or newer | OBD scan | Not listed | | Diesel, model year 2012 or older (no OBD) | Smoke opacity test (SAE J1667) plus visual inspection | Not listed | | California-registered motorhome | Same test as above by engine year, once a year | Not listed | For a 2012 or older diesel, the nearest listed tester with smoke opacity testing is David Hartfield III in Vallejo, about 3 miles away. [See listing](https://ctcfinder.com/tester/david-hartfield-iii-vallejo/). If you need a tester at your yard, the nearest listed tester that offers mobile testing is ECS Mobile Services in Vallejo, about 1 mile away. [See listing](https://ctcfinder.com/tester/ecs-mobile-services-vallejo/). ## Clean Truck Check testers in Solano County Michael's Transportation Service Inc. is one of 38 testing businesses in Solano County on CARB's public tester list. 34 of them offer mobile testing and 21 do smoke opacity tests. In Vallejo itself there are 8 listed businesses, 7 of them mobile. ## When your truck is due Most trucks test twice a year, on a schedule tied to the DMV registration expiration date. CARB says OBD trucks move to four tests a year beginning October 2027. California-registered (non-commercial) motorhomes and agricultural vehicles test once a year. See the [deadline guide](https://ctcfinder.com/guide/deadlines-2026-2027/). You can test up to 90 days before a deadline. Free email reminders: https://ctcfinder.com/reminders/ ## Frequently asked questions ### Does Michael's Transportation Service Inc. offer mobile Clean Truck Check testing? Not according to CARB's tester list; plan to bring the truck to the tester. The nearest listed mobile tester is [ECS Mobile Services](https://ctcfinder.com/tester/ecs-mobile-services-vallejo/) (about 1 mile). ### Can Michael's Transportation Service Inc. test a 2012 or older diesel truck? Michael's Transportation Service Inc. does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [David Hartfield III](https://ctcfinder.com/tester/david-hartfield-iii-vallejo/) (about 3 miles). Trucks from 2013 on get an OBD scan instead. ### How much does Michael's Transportation Service Inc. charge for a Clean Truck Check? Michael's Transportation Service Inc. has not published prices with us; call (707) 712-6713 for a quote. Published California prices are usually $50–$135 per vehicle for an OBD test and $190–$200 for a smoke opacity test, plus CARB's annual fee ($32.13 in 2026). See the [cost guide](https://ctcfinder.com/guide/cost/). ### Is Michael's Transportation Service Inc. a CARB-credentialed tester? Michael's Transportation Service Inc. appears on CARB's public Clean Truck Check tester list, last checked November 1, 2026. Only credentialed testers can submit results to CARB; after the test, confirm the passing result shows for your vehicle in CTC-VIS. ## Other testers nearby - **[ECS Mobile Services](https://ctcfinder.com/tester/ecs-mobile-services-vallejo/)** — 179 Coloma Way, Vallejo, CA 94589 — (707) 398-8574 — 1 mi. Services: mobile testing, OBD testing, motorhome testing. - **[David Hartfield III](https://ctcfinder.com/tester/david-hartfield-iii-vallejo/)** — Vallejo, CA 94591 — (510) 707-3344 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[DDK Enterprises INC](https://ctcfinder.com/tester/ddk-enterprises-inc-vallejo/)** — 8012 Vertine Ct, Vallejo, CA 94591 — (510) 563-7016 — 3 mi. Services: mobile testing, OBD testing. - **[Primos Mobile Truck & RV Testing](https://ctcfinder.com/tester/primos-mobile-truck-and-rv-testing-vallejo/)** — 1127 Belmont Ave, Vallejo, CA 94591 — (707) 310-1367 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Days Smog& DMV Registration Services](https://ctcfinder.com/tester/days-smog-and-dmv-registration-services-vallejo/)** — 1624 Broadway St, Vallejo, CA 94590 — (707) 997-0420 — 3 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Touch Trucking LLC](https://ctcfinder.com/tester/touch-trucking-llc-vallejo/)** — 301 Greenfield Ave, Vallejo, CA 94590 — (510) 496-1005 — 3 mi. Services: mobile testing, OBD testing.