In New Hampshire, there is no specific law that makes cursing while driving illegal. However, New Hampshire law does address disorderly conduct, which includes publicly directing obscene, derisive, or offensive words likely to provoke a violent reaction at another person, but this would apply generally and not specifically tied to driving. Reckless driving laws in New Hampshire focus on dangerous driving behaviors that endanger safety but do not mention profanity or cursing as offenses. So, while rude behavior may not be advisable, cursing while driving itself is not illegal under New Hampshire law.​
It is important to note that certain actions related to aggressive or reckless driving, including road rage, can lead to charges if they involve threats, fighting, or dangerous actions, so the context matters legally rather than the use of curse words alone.​
No fines or jail penalties specifically address the use of profanity while driving in New Hampshire according to current statutes.
SOURCES
[1](https://law.justia.com/codes/new-hampshire/2023/title-xxi/chapter-265/section-265-79/)
[2](https://fblawnh.com/new-hampshire-reckless-driving-laws/)
[3](https://www.nhlawoffice.com/blog/2021/march/can-i-be-arrested-in-new-hampshire-for-saying-of/)
[4](https://www.tennandtenn.com/understanding-reckless-driving-laws-in-new-hampshire-what-you-need-to-know/)
[5](https://www.trustedchoice.com/distracted-driving/new-hampshire-laws/)
