Oklahoma's Only Roadblock Statute Requires Probable Cause, Not a Sobriety Sweep

Section 540B was added by Laws 1980, c. 115, Section 2, and its structure has not changed since. The authorising sentence ties the roadblock to a person and a suspicion about that person: the officer must have probable cause to believe that the person to be apprehended is committing or has committed one of three things. Paragraph 1 is a violation of Section 540A, the eluding statute. Paragraph 2 is escape from the lawful custody of any peace officer. Paragraph 3 is a felony under the laws of this state or of any other jurisdiction. Nothing there describes a general screening of drivers for impairment, and impaired driving does not slot into paragraph 3 either, because a first offence under 47 O.S. Section 11-902(C)(1) is expressly a misdemeanor.

Section 540B is also careful about what a roadblock physically is. It defines one as a barricade, sign, standing motor vehicle or similar obstacle temporarily placed upon or adjacent to a public street, highway, turnpike or area accessible to the motoring public, with one or more peace officers in attendance directing each operator of approaching vehicles to stop or proceed. That definition matters at the enforcement end: the duty to stop and the felony for evading it attach only to something that meets it.

The duty side is strict. An operator approaching such a roadblock has a duty to stop unless directed otherwise by an officer in attendance, and a willful violation is expressly a separate offence from any other offence committed. Willfully attempting to avoid the roadblock, willfully failing to stop, or willfully passing by or through it without permission from an officer in attendance is a Class C2 felony punished by imprisonment under Sections 20M(B) through (F) of Title 21, a fine not exceeding Five Thousand Dollars ($5,000.00), or both. That felony classification came in with Laws 2025, c. 486, Section 222, effective January 1, 2026, and is the text in force.

Whether a suspicionless sobriety checkpoint can be run in Oklahoma at all is a constitutional question decided by courts under the Fourth Amendment and Article 2, Section 30 of the Oklahoma Constitution, not a statutory one. What can be said from the code is narrower and more useful: the Legislature has supplied no authorising scheme, no procedural requirements for advance publicity, supervisory approval, neutral stopping formula or signage, and no reporting duty of the kind states that legislated checkpoints attached to them. A driver looking for the statutory rules governing a checkpoint in Oklahoma will not find any, because none were written.

What the statutes do govern in detail is what happens once you are stopped. 47 O.S. Section 751(A)(1) deems a driver to have consented to a test of blood or breath for alcohol concentration, and of blood, saliva or urine for other intoxicating substances, but the consent is triggered "if arrested" for an offence arising out of driving under the influence, or where a serious-injury or fatal accident removed the driver to a facility outside Oklahoma before an arrest could be made. Section 751(A)(2) then lets an officer with reasonable grounds to believe the person was operating or in actual physical control while under the influence direct the administration of the test. A stop by itself does not trigger it.

Refusal is handled by 47 O.S. Section 753(A). If a conscious person under arrest refuses, no test shall be given except on the issuance of a search warrant, unless the investigating officer has probable cause to believe that the person, while intoxicated, operated the vehicle so as to cause the death or serious physical injury of another. Refusal costs the licence: Service Oklahoma revokes the licence or nonresident operating privilege for the period set by Section 6-205.1 on the officer's sworn report, and the revocation takes effect forty-five (45) days after written notice. Section 753(B) requires immediate reinstatement where a test taken under a warrant despite the refusal showed no measurable quantity of alcohol or other intoxicating substance.

One caution about the official text. The 2025 session amended 47 O.S. Section 11-902 four separate times, and the statutes are published with four numbered versions of the section, v1 through v4, from HB 1222, HB 1460, SB 54 and HB 2104. All four carry the same subsection C(1): a first conviction is a misdemeanor with imprisonment of not less than ten (10) days nor more than one (1) year and a fine of not more than One Thousand Dollars ($1,000.00). Section 540A is printed in two versions for the same reason.

Running a roadblock is the serious offence here. 00), or both, and the statute says plainly that the willful violation is a separate offence from anything else committed. Attempting to avoid a roadblock also appears in Title 21's schedule of listed offences. 00) for a second, and becomes a Class C1 felony where the conduct endangered another person. S. 00), and a mandatory assessment and evaluation whose recommendations must be followed. Refusing a test after arrest triggers licence revocation under Section 753(A) effective forty-five days after written notice.