It is a very bad idea. Even for a first offender a DUI in NH will revoke your license, obligate you to take safety and possibly drug classes, as well as hefty monetary penalties and possible confinement if your driving was endangering people, which makes your crime “aggravated.” A specially trained narcotics officer will make the final determination if you were at all impaired, then that’s it.
New Hampshire law states that any person operating a vehicle while under the influence of a controlled drug is guilty of a DUI. This would include marijuana. Sobriety is determined through a “physical test,” and if an officer determines that a driver is impaired in any way due to a controlled substance, then the driver is guilty of a DUI.
Yes, you can get a DUI if you are caught driving under the influence of marijuana in New Hampshire, just like any other controlled substance. If the officer believes you are under the influence of marijuana they will administer a field sobriety test which will check and monitor your behaviors. If you fail this test you will be arrested and charged with a DUI or some equivalent. Marijuana is treated roughly the same as alcohol.