Question 1

What is California Clean Truck Check?

Accepted Answer

Clean Truck Check (CTC) is California's CARB-mandated emissions compliance program for non-gasoline heavy-duty vehicles over 14,000 lbs GVWR operating in the state. It replaces the old periodic smoke inspection program with OBD and emissions data submission.

Question 2

Who needs testing?

Accepted Answer

Most non-gasoline heavy-duty vehicles over 14,000 lbs GVWR operated in California — including owner-operator trucks, commercial fleets, agricultural, construction, municipal vehicles, and diesel RVs. Out-of-state vehicles operating in CA are also subject to the program.

Question 3

How often is testing required?

Accepted Answer

Most vehicles require testing twice per year (every 6 months). Some lower-mileage and specialty vehicles may have different intervals. We'll help confirm what applies to your vehicle.

Question 4

How long does testing take?

Accepted Answer

Most OBD-equipped vehicles can be tested in 15–30 minutes per truck. Fleet visits are typically faster per vehicle once we're on-site.

Question 5

Do you come to my location?

Accepted Answer

Yes — we are 100% mobile. We come to your yard, jobsite, driveway, or wherever your vehicle is. That's the entire point of Redwood CTC.

Question 6

Can you test an entire fleet?

Accepted Answer

Absolutely. We routinely test fleets of all sizes — agricultural, construction, municipal, and delivery. We'll coordinate a visit to minimize disruption to your operations.

Question 7

What happens if my vehicle fails?

Accepted Answer

We'll explain exactly what triggered the failure and what's needed to bring the vehicle back into compliance. After repairs, we can return for a retest.

Question 8

What areas do you serve?

Accepted Answer

Santa Cruz County, Monterey County, San Benito County, and Santa Clara County — including Boulder Creek, Scotts Valley, Santa Cruz, Watsonville, San Jose, Morgan Hill, Gilroy, Hollister, Salinas, Monterey, Marina, and Carmel.

Question 9

Do diesel RVs require testing?

Accepted Answer

Most diesel motorhomes over 14,000 lbs GVWR are subject to CTC requirements. We provide convenient mobile testing for RV owners so you don't have to drive your coach to a shop.

Question 10

How do I schedule?

Accepted Answer

Call or text Erik directly, or use the online Schedule Appointment form. We typically confirm same-day and can often book within the same week.

Straight answers about California Clean Truck Check.

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