---
title: "RA Clark Trucking Company — Clean Truck Check, Windfall, IN"
description: "RA Clark Trucking Company in Windfall, IN is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing. Phone, address and nearby testers."
url: "https://ctcfinder.com/tester/ra-clark-trucking-company-windfall-in/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# RA Clark Trucking Company

Clean Truck Check tester in Windfall, IN.

> 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 | 300 W Sherman St, Windfall, IN 46076 |
| Phone | (765) 438-1644 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | No |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks RA Clark Trucking Company 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 | 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 AIRLIMITS - Indianapolis in Indianapolis, about 43 miles away. [See listing](https://ctcfinder.com/tester/airlimits-indianapolis-indianapolis-in/).

## Clean Truck Check testers in Indiana

RA Clark Trucking Company is one of 11 testing businesses in Indiana on CARB's public tester list. 9 of them offer mobile testing and 3 do smoke opacity tests.

## 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 RA Clark Trucking Company offer mobile Clean Truck Check testing?

Yes. RA Clark Trucking Company 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 RA Clark Trucking Company test a 2012 or older diesel truck?

RA Clark Trucking Company does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [AIRLIMITS - Indianapolis](https://ctcfinder.com/tester/airlimits-indianapolis-indianapolis-in/) (about 43 miles). Trucks from 2013 on get an OBD scan instead.

### How much does RA Clark Trucking Company charge for a Clean Truck Check?

RA Clark Trucking Company has not published prices with us; call (765) 438-1644 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 RA Clark Trucking Company a CARB-credentialed tester?

RA Clark Trucking Company 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.