--- title: "Clean Truck Check Testers in Signal Hill, CA (3 listed)" description: "Find 3 CARB-credentialed Clean Truck Check testers in Signal Hill, Los Angeles County: 2 offer mobile testing, 1 do smoke opacity tests. Phone numbers…" url: "https://ctcfinder.com/testers/los-angeles-county/signal-hill/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # Clean Truck Check testers in Signal Hill, CA 3 testing businesses in Signal Hill (Los Angeles County) are on CARB's public Clean Truck Check tester list (3 credentialed testers). 2 offer mobile testing, 1 do smoke opacity tests, 2 test motorhomes. > 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. ## Testers in Signal Hill - **[Eduardo Monroy](https://ctcfinder.com/tester/eduardo-monroy-signal-hill/)** — Signal Hill, CA 90755 — (424) 373-2744. Services: mobile testing, OBD testing, motorhome testing. - **[Lan Logistics](https://ctcfinder.com/tester/lan-logistics-signal-hill/)** — 2828 Junipero Ave, Signal Hill, CA 90755 — (562) 237-2425. Services: not listed. - **[Mark's Mobile Truck Serv., LLC](https://ctcfinder.com/tester/marks-mobile-truck-serv-llc-signal-hill/)** — 3348 Olive Ave, Signal Hill, CA 90755 — (714) 345-5484. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## More testers within 20 miles - **[A&G](https://ctcfinder.com/tester/a-and-g-long-beach/)** — 631 E Burnett St #B, Long Beach, CA 90806 — (562) 388-3377 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[LA Smog](https://ctcfinder.com/tester/la-smog-long-beach/)** — 550 E Pacific Coast Hwy, Long Beach, CA 90806 — (562) 674-6873 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Long Beach Smog Pros](https://ctcfinder.com/tester/long-beach-smog-pros-long-beach/)** — 2160 Long Beach Boulevard B, Long Beach, CA 90806 — (562) 787-2225 — 1 mi. Services: mobile testing, OBD testing, motorhome testing. - **[System Maintenance](https://ctcfinder.com/tester/system-maintenance-long-beach/)** — 1335 East Spring Street, Long Beach, CA 90806 — (310) 629-3050 — 1 mi. Services: OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Airlimits Nationwide CTC](https://ctcfinder.com/tester/airlimits-nationwide-ctc-long-beach/)** — 65 Pine Ave, Long Beach, CA — (800) 788-5241 — 2 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Blackstone Fleet Compliance](https://ctcfinder.com/tester/blackstone-fleet-compliance-long-beach/)** — Long Beach, CA 90804 — (562) 488-3272 — 2 mi. Services: mobile testing, OBD testing. - **[DMV Smog Check](https://ctcfinder.com/tester/dmv-smog-check-long-beach/)** — 3431 Cherry Ave, Long Beach, CA 90807 — (714) 881-5689 — 2 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[LB Walker Automotive](https://ctcfinder.com/tester/lb-walker-automotive-long-beach/)** — 1000 E Wardlow Rd, Long Beach, CA 90807 — (626) 665-7090 — 2 mi. Services: mobile testing, OBD testing, motorhome testing. - **[HD Industries INC](https://ctcfinder.com/tester/hd-industries-inc-long-beach/)** — 537 W ANAHIEM ST, Long Beach, CA 90813 — (562) 587-9757 — 2 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Long Beach Maintenance and Repair](https://ctcfinder.com/tester/long-beach-maintenance-and-repair-long-beach/)** — 2030 West 17Th Street, Long Beach, CA 90813 — (562) 704-0592 — 2 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Ponce Diesel](https://ctcfinder.com/tester/ponce-diesel-long-beach/)** — 744 Cerritos Avenue, Long Beach, CA 90813 — (562) 682-3493 — 2 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Silva truck & auto electric](https://ctcfinder.com/tester/silva-truck-and-auto-electric-long-beach/)** — 1618 W Esther St, Long Beach, CA 90813 — (562) 346-8774 — 2 mi. Services: mobile testing, OBD testing, motorhome testing. ## Trucking in Signal Hill Los Angeles County has more listed testers than any other county. Seaports and intermodal railyards, including the Ports of Los Angeles and Long Beach, must verify Clean Truck Check compliance at entry or log non-compliant trucks (CARB). ## Cost Typical published prices in California: OBD test $50–$135 per vehicle; smoke opacity test $190–$200. Prices are set by each tester. ## Frequently asked questions ### How many Clean Truck Check testers are in Signal Hill? CTC Finder lists 3 testing businesses in Signal Hill from CARB's public tester list (3 credentialed testers), last checked November 1, 2026. Listing on CARB's list is optional, so the real number can be higher. ### Is there mobile Clean Truck Check testing in Signal Hill? Yes. 2 listed businesses in Signal Hill offer mobile testing, which means the tester comes to your yard. Use the Mobile filter above to see them. ### How much does a Clean Truck Check test cost in Signal Hill? Testers set their own prices. Published prices for an OBD test are usually $50–$135 per vehicle; smoke opacity tests for older trucks often cost more, and mobile testers may add a trip fee. See the [cost guide](https://ctcfinder.com/guide/cost/). ### How often does my truck need a Clean Truck Check test? 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/). ## Nearby cities - [Long Beach](https://ctcfinder.com/testers/los-angeles-county/long-beach/) — 26 listings, 1 mi - [Lakewood](https://ctcfinder.com/testers/los-angeles-county/lakewood/) — 4 listings, 4 mi - [Wilmington](https://ctcfinder.com/testers/los-angeles-county/wilmington/) — 12 listings, 6 mi - [Carson](https://ctcfinder.com/testers/los-angeles-county/carson/) — 6 listings, 6 mi - [Bellflower](https://ctcfinder.com/testers/los-angeles-county/bellflower/) — 8 listings, 6 mi - [Compton](https://ctcfinder.com/testers/los-angeles-county/compton/) — 11 listings, 6 mi - [Paramount](https://ctcfinder.com/testers/los-angeles-county/paramount/) — 3 listings, 7 mi - [Lynwood](https://ctcfinder.com/testers/los-angeles-county/lynwood/) — 6 listings, 9 mi - [Norwalk](https://ctcfinder.com/testers/los-angeles-county/norwalk/) — 5 listings, 9 mi - [Gardena](https://ctcfinder.com/testers/los-angeles-county/gardena/) — 7 listings, 9 mi