Maryland DUI Checkpoints: The Only Statute About Them Is About Motorcycles

Start with what the Code says, because most of what circulates about Maryland checkpoints is not in it. A full-text search of the Annotated Code for "sobriety checkpoint" returns zero results. There is no Maryland statute authorizing checkpoints, none prohibiting them, none requiring advance publication, none prescribing a neutral formula for which vehicles are stopped, and none capping detention time. The Legislature has instead acknowledged the practice twice in passing and regulated one narrow aspect of it.

The acknowledgment that matters is Transportation section 25-114(a), which supplies the only statutory definition Maryland has: a "checkpoint" is "a predetermined fixed location at which a police officer stops a motor vehicle or a specific sequence of motor vehicles to conduct safety inspections, inspect drivers' licenses or registrations, or evaluate drivers for impairment." Two features of that definition are worth reading closely. The location must be predetermined and fixed, so a roving patrol is not a checkpoint within the section. And the officer stops either a vehicle or a specific sequence of vehicles, which is the language of a preset pattern rather than officer choice. Section 25-114(b) then prohibits a police officer at a motor vehicle checkpoint from targeting only motorcycles for inspection or evaluation, and section 25-114(c) restores that power where the checkpoint is established as part of a police search or investigation. Transportation section 21-103(a)(2) repeats the motorcycle limit inside the obey-a-lawful-order section, making clear that the duty to obey does not license motorcycle-only screening.

The second acknowledgment is an exclusion, and it has a practical consequence for anyone trying to study checkpoint stops. Transportation section 25-113 requires every Maryland law enforcement agency to record fifteen data points for each traffic stop, including whether a search was conducted, whether it was consensual or nonconsensual, and the race or ethnicity of the driver, and to file the data with the Maryland Statistical Analysis Center by March 1 for publication in a filterable public display by September 1. But section 25-113(a)(6)(ii)1 removes "a checkpoint or roadblock stop" from the definition of "traffic stop," alongside multi-vehicle accident stops, radar, laser, or vascar stops, and license plate reader stops. Checkpoint encounters therefore do not appear in Maryland's statewide traffic stop dataset at all.

One genuinely distinctive Maryland provision touches roadblocks from the other direction. Transportation section 19-102(a) provides that a police officer may not direct any driver, owner, or passenger of a motor vehicle other than a police vehicle to participate in a roadblock. Section 19-102(b) makes the State or the political subdivision liable for damages or injuries proximately caused by participation where an officer does so anyway while enforcing a law or apprehending a suspect, and section 19-102(c) preserves the defenses of contributory negligence and last clear chance. That section is about conscripting civilian vehicles, not about sobriety screening, but it is the only place the word roadblock carries a remedy in Maryland law.

What happens to you at the checkpoint runs on the general statutes. Transportation section 21-103(a)(1) provides that a person may not willfully disobey any lawful order or direction of any police officer, which is the basis for the duty to stop and to move where directed. Transportation section 16-112(b) and (c)(1) require you to have your license with you and to display it, meaning manual surrender into the officer's hands under section 16-112(a)(3). Criminal Procedure section 1-211 applies with full force at a checkpoint: an officer may not search your car based solely on the odor of burnt or unburnt cannabis, on possession of no more than the personal use amount, or on cash near cannabis without other indicia of intent to distribute, and section 1-211(c) makes evidence from such a search inadmissible even where you consented. Arrest authority comes from Transportation section 26-202(a)(3), which lets an officer arrest without a warrant on probable cause to believe the driver was driving or attempting to drive while under the influence of alcohol, while impaired by alcohol, or while impaired by a drug, a combination of drugs, or a controlled dangerous substance.

The test is where the checkpoint gets expensive. Transportation section 16-205.1(a)(2) deems every person who drives on a Maryland highway or on private property used by the public to have consented to a breath or blood test if detained on suspicion of impaired driving. Section 16-205.1(b)(1) says you may not be compelled to take it, but requires the officer to advise you of what refusal costs: a 270-day license suspension for a first offense and 2 years for a second or subsequent offense under section 16-205.1(b)(1)(i)5. Taking the test and registering 0.08 or more brings a 180-day suspension, and 0.15 or more brings 180 days for a first offense and 270 days for a second under section 16-205.1(b)(1)(i)1 and 2. The officer issues a temporary license good for 45 days. You may request a Motor Vehicle Administration hearing at that time or within 10 days, in which case section 16-205.1(f)(5)(i) requires the Administration to set it within 30 days of receiving the request; a request made after 10 days but within 30 still gets a hearing under section 16-205.1(f)(6) but does not extend the 45-day driving period. Section 16-205.1(g) offers the Ignition Interlock System Program under section 16-404.1 as an alternative to requesting a hearing.

The hearing is where a checkpoint stop can be challenged administratively, because section 16-205.1(f)(7)(i) limits the issues to a closed list of eight, and the first is whether the officer who stopped or detained the person had reasonable grounds to believe the person was driving or attempting to drive while impaired. Section 16-205.1(f)(7)(ii) makes the sworn statement of the officer and of the test technician prima facie evidence of a refusal or of a result at 0.08 or 0.15 or more, so the driver is arguing against a document that starts out carrying weight. Section 16-205.1(k) allows an appeal of a final order of suspension or revocation under Title 12, Subtitle 2.

Refusing to stop or to follow directions at a Maryland checkpoint is a violation of Transportation section 21-103(a)(1), a Maryland Vehicle Law misdemeanor subject to a fine not exceeding $500 under Transportation section 27-101 except as otherwise provided. Failing to carry or display a license violates section 16-112 and carries the same default penalty. 1(f)(8)(iv) provides that failing to attend a requested hearing without a compelling reason is prima facie evidence of the person's inability to answer the officer's sworn statement and results in summary action by the Administration.

An officer who directs a civilian driver, owner, or passenger to participate in a roadblock contrary to section 19-102(a) exposes the State or the political subdivision to liability under section 19-102(b) for damages or injuries proximately caused by that participation, subject to the contributory negligence and last clear chance defenses preserved by section 19-102(c). A checkpoint that screens only motorcycles contravenes section 25-114(b) unless it was established as part of a police search or investigation under section 25-114(c).