---
title: "Hernandez Road Service LLC — Clean Truck Check, Palmdale, CA"
description: "Hernandez Road Service LLC in Palmdale, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, smoke opacity (non-OBD) testing…"
url: "https://ctcfinder.com/tester/hernandez-road-service-llc-palmdale/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Hernandez Road Service LLC

Clean Truck Check tester in Palmdale, CA (Los Angeles 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 | 38333 6th St E, Palmdale, CA 93550 |
| County | Los Angeles County |
| Phone | (818) 309-6865 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Hernandez Road Service LLC can test

| Your vehicle | Test required | This tester |
|---|---|---|
| Diesel, model year 2013 or newer | OBD scan | Yes |
| Alternative fuel (natural gas, propane), 2018 or newer | OBD scan | Yes |
| Diesel, model year 2012 or older (no OBD) | Smoke opacity test (SAE J1667) plus visual inspection | Yes |
| California-registered motorhome | Same test as above by engine year, once a year | Yes |

## Clean Truck Check testers in Los Angeles County

Hernandez Road Service LLC is one of 516 testing businesses in Los Angeles County on CARB's public tester list. 465 of them offer mobile testing and 190 do smoke opacity tests. In Palmdale itself there are 12 listed businesses, 10 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 Hernandez Road Service LLC offer mobile Clean Truck Check testing?

Yes. Hernandez Road Service LLC says on CARB's tester list that it offers mobile testing, so it can come to your yard or job site. Ask about a trip fee when you call.

### Can Hernandez Road Service LLC test a 2012 or older diesel truck?

Yes. Hernandez Road Service LLC lists smoke opacity testing, the test CARB requires for diesel trucks of model year 2012 and older (no OBD). See [OBD vs smoke opacity](https://ctcfinder.com/guide/obd-vs-smoke-opacity-test/).

### How much does Hernandez Road Service LLC charge for a Clean Truck Check?

Hernandez Road Service LLC has not published prices with us; call (818) 309-6865 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 Hernandez Road Service LLC a CARB-credentialed tester?

Hernandez Road Service LLC 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

- **[Classic Smog Test Only](https://ctcfinder.com/tester/classic-smog-test-only-palmdale/)** — 37925 Sierra Hwy Ste K, Palmdale, CA 93550 — (818) 625-2888 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Classicsmog Test Center](https://ctcfinder.com/tester/classicsmog-test-center-palmdale/)** — 37925 Sierra Highway, Palmdale, CA 93550 — (661) 965-5952 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Freight Here LLC](https://ctcfinder.com/tester/freight-here-llc-palmdale/)** — 210 E Avenue R4, Palmdale, CA 93550 — (661) 350-0674 — 1 mi. Services: mobile testing, OBD testing.
- **[Heavy Truck Testing](https://ctcfinder.com/tester/heavy-truck-testing-palmdale/)** — 1475 East Palmdale Boulevard, Palmdale, CA 93550 — (661) 998-6073 — 1 mi. Services: OBD testing, motorhome testing.
- **[Hernandez Sergio](https://ctcfinder.com/tester/hernandez-sergio-palmdale/)** — Palmdale, CA 93550 — (213) 210-0129 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Rapid Truck Check](https://ctcfinder.com/tester/rapid-truck-check-palmdale/)** — 36556 Palomino Court, Palmdale, CA 93550 — (818) 913-2136 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.