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Can better server training stop drunk drivers before they start?

NCT ID NCT05779774

NEW Prevention Sponsor: Klein Buendel, Inc. Source: ClinicalTrials.gov ↗

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Sep 21, 2026 · Last updated Sep 21, 2026

Summary

Researchers are testing whether adding an in-service professional development component to the WayToServe online responsible beverage service training helps alcohol servers refuse service to intoxicated patrons more often. The trial enrolls licensed premises owners, managers, and servers aged 19 and older in two states. Premises are randomly assigned to receive either the standard WayToServe training alone or the training plus the new in-service component. The main measure is how often servers refuse alcohol to actors who appear intoxicated during staged assessments.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
an in-service professional development component added to the WayToServe online responsible beverage service training
What this could lead to
If it works, this could give bars and restaurants a practical way to train staff to refuse alcohol service to intoxicated patrons, which may help reduce drunk driving in their communities.
What could go wrong
This is a behavioral training study, not a drug trial, and its success depends on whether servers change their real-world behavior. The trial measures refusals during staged assessments, so results may not reflect everyday practice, and any effect on drunk driving rates would take years to confirm.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

216 people

The number who actually took part.

Started

Oct 2022

Finished

May 2026

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

19 years and older

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * 19 years of age or older * Own/manage a licensed premises or be an alcohol server (waitress, waiter or bartender) * Have completed the WayToServe responsible beverage service training (Phase I only) * Be proficient in English * Consent to participate Exclusion Criteria: * Have a family/household member already participating in project • Younger than 19 years old (18 and younger cannot legally serve alcohol in either state)

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Conditions

The condition(s) this trial relates to.

Alcohol Drinking Alcoholic Intoxication Driving Under the Influence poisoning

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Alcohol drinking Alcohol intoxication Alcohol use, unspecified

Contacts and locations

Locations

  • Klein Buendel, Inc

    Golden, Colorado, 80401, United States

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