New Hampshire Requires a Four-Part Warning Before a Consent Car Search

New Hampshire put this rule in the search warrant chapter, not in a drug statute. RSA 595-A:10 was enacted by 2021, 196:1 and took effect on October 9, 2021, and it is written as an exception to the warrant requirement rather than as a driver's right, which is why it binds the officer's script rather than describing what a driver may say.

Paragraph I sets the advisory. The search is lawful without a warrant only if the officer expressly informs the operator of all four points in subparagraphs (a) through (d). Paragraph II then removes the follow-up: if the operator refuses, the officer shall cease any further questioning concerning consent to a search. That is stronger than a right to say no, because it forbids the second and third ask that consent-search practice usually depends on.

Paragraph III is the record-keeping half. Consent must be documented either by the operator's signature on a consent-to-search form that itself gives notice of paragraphs I and II, or by a video and sound recording of the consent made at the time. Whichever is used must be retained until any criminal charge resulting from the consent search is fully resolved. Paragraph IV supplies the remedy: any act of a law enforcement officer that violates the section results in the inadmissibility in any criminal proceeding of the evidence obtained.

The carve-outs are in paragraph V. The section does not preclude searches incident to arrest, searches allowed under the United States Constitution for officer safety, searches on the grounds, lands or parking areas of a state or county correctional facility or a department of corrections transitional housing unit, or inventory searches of lawfully-seized property, expressly including vehicles towed in conjunction with the arrest of the operator. Paragraph VI adds that anyone on prison grounds or in a corrections facility, whether resident, visitor or staff, is subject to search of vehicle, possessions and person without warning under administrative rule Cor 306. Separately, RSA 594:3 lets an officer questioning a person under RSA 594:2 search that person for a dangerous weapon where the officer reasonably believes he might be in danger.

Consenting to a vehicle search does not reach a phone. RSA 644:21, II says no information contained in a portable electronic device shall be subject to search by a government entity, including a search incident to a lawful arrest or for inventory purposes, except under a warrant signed by a judge and based on probable cause or a legally-recognized exception, and it requires the device to be returned as expeditiously as possible. RSA 644:21, III makes evidence obtained in violation inadmissible in criminal, civil and administrative proceedings alike, and IV creates a civil suit against the government entity.

New Hampshire has decriminalized rather than legalized adult cannabis possession, and it has no odour-and-probable-cause clause of the kind several legalizing states adopted. RSA 318-B:2-c makes possession of three quarters of an ounce or less of marijuana, five grams or less of hashish, or a personal-use amount of a regulated marijuana-infused product a violation with a $100 fine for a first or second offence, and it contains no search provision at all. The nearest search language in the cannabis statutes, RSA 126-X:2, protects alternative treatment centers, their agents, testing laboratories and facility caregivers from search or inspection, and does not reach a driver on the road. RSA 595-A:10 is the provision that actually governs the roadside question.

Where an officer searches without giving the RSA 595-A:10, I advisory, keeps asking after a refusal contrary to paragraph II, or fails to document the consent as paragraph III requires, paragraph IV directs that the evidence obtained is inadmissible in any criminal proceeding. The section does not create a fine or a criminal penalty against the officer, so suppression is the operative sanction, raised by motion in the prosecution the search produced. A refusal to consent cannot itself be charged: subparagraph I(c) states that the operator cannot be charged with any crime or violation for refusing, and I(b) removes refusal as a basis for probable cause to arrest or reasonable suspicion to detain.

A search of a phone or other portable electronic device carried out without a warrant or a recognized exception is separately handled by RSA 644:21, which makes the evidence inadmissible in criminal, civil, administrative and other proceedings, except as proof of a violation of that section, and lets the injured person sue the government entity. None of this displaces a search incident to arrest, a constitutional officer-safety search, or an inventory search of a lawfully towed vehicle, all preserved by RSA 595-A:10, V.