Utah Portable Breath Tests and DUI Rule R714-501
Utah Portable Breath Tests and DUI Investigations: Rule R714-501 Revisited
Utah has adopted a formal administrative rule governing how police officers may use portable breath tests during DUI investigations.
The rule, known as Utah Administrative Code R714-501, became effective December 23, 2024, and creates statewide standards for the use of preliminary oral fluid and portable breath testing during roadside investigations. The rule is authorized by Utah Code Section 53-25-102, which requires standards for oral fluid and portable breath testing as part of field sobriety testing.
For anyone facing a DUI or drug-related driving charge in Utah, this rule matters. It places limits on how officers may use roadside testing and confirms that a portable breath test should not be the main basis for an arrest decision.
What Is a Portable Breath Test?
A portable breath test, often called a PBT, is a handheld breath-testing device that officers may use during a roadside DUI investigation.
These devices are different from the larger breath-testing machines used at police stations or other controlled testing locations. A PBT is portable, used in the field, and often administered before an arrest is made.
Portable breath tests may show up in police reports after DUI stops, underage drinking investigations, college party investigations, or other alcohol-related encounters.
What Utah Rule R714-501 Says About Portable Breath Tests
Under Utah Admin. Code R714-501, officers must follow certain standards before using a portable breath test.
Some of the key requirements include:
- Officers must complete training before using a portable breath testing instrument.
- The test must comply with the rule and be consistent with manufacturer and industry standards.
- If standardized field sobriety tests are administered as part of the DUI investigation, the portable breath test must come after those tests.
- There must already be evidence of impairment based on the totality of the circumstances.
- A portable breath test may not be the primary factor used to decide whether to arrest someone.
That last point is especially important. The rule specifically states that a portable breath test “may not be the primary factor upon which a decision to arrest is made.”
In other words, the officer should already have other evidence of impairment before relying on a roadside breath test.
Portable Breath Testing Is Voluntary
Another important part of Utah Admin. Code R714-501 is its language about voluntariness.
The rule states that portable breath testing:
- Is voluntary for the subject of the investigation
- May be refused by the subject of the investigation
This matters because roadside DUI investigations often involve several different types of evidence, including officer observations, field sobriety tests, admissions, driving patterns, odor of alcohol, and other circumstances.
Without a portable breath test or field sobriety testing, officers may have a harder time establishing probable cause for a DUI arrest, depending on the facts of the case.
A PBT Should Not Replace Evidentiary Testing
The rule also recognizes that a portable breath test is not the same as a later evidentiary test.
When a portable breath test is administered, the rule says an officer should obtain a follow-up test, such as an intoxilyzer test or blood draw, for evidentiary purposes.
That language may become important in a DUI defense case. It suggests that roadside portable breath testing has limits and should not be treated as a complete substitute for more formal testing.
Why This Rule Matters in Utah DUI Defense Cases
Administrative rules can become important in DUI defense, especially when reviewing whether the officer followed required procedures.
If an officer failed to follow Rule R714-501, a defense attorney may investigate issues such as:
- Whether the roadside testing was reliable
- Whether the officer had probable cause to arrest
- Whether the portable breath test was used improperly as the main basis for arrest
- Whether the officer completed required training
- Whether the test was truly voluntary
- Whether the officer followed proper testing procedures
- Whether the results were properly documented in the police report
These issues do not automatically mean a DUI case will be dismissed. However, they may support suppression motions, cross-examination, negotiations, or other defense strategies depending on the facts.
Talk to a Utah DUI Defense Attorney
If you are facing a DUI or drug-related driving charge in Utah, the details of the roadside investigation matter.
How the officer conducted field sobriety testing, whether a portable breath test was requested, whether the test was voluntary, and whether the officer followed Utah’s administrative rules may all become important to your defense.
Attorney Jake Gunter can help review the police report, evaluate whether the officer followed proper procedures, and explain your options.
Call or text Utah DUI attorney Jake Gunter at (801) 373-6345 or contact a Provo criminal defense attorney today.
