New Hampshire OBD & Safety Testing Program

Information for Stations and Mechanics

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Contact Us

Help Line:
1-800-383-4124
Monday-Saturday: 8:00AM - 6:00PM

E-mail:
Click the Mail button on your NHOST Unit to send a message to Technical Support.

Traditional Mail:
Gordon-Darby NHOST Services
2410 Ampere Drive
Louisville, KY 40299

Links to Additional Information

NH Government Links:
Saf-C 3200
RSA CHAPTER 266
State of New Hampshire Website
Department of Safety - DMV Website

Other Resources:
US EPA Website - A great resource for OBD information.

Here are some links of note:
EPA OBD FAQs
EPA OBD Brochure
U.S. EPA's Office of Transportation and Air Quality (OTAQ)

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