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ClinicalTrials.gov public records Last synced May 21, 2026, 10:06 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–24 of 43 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Impaired Driving Clear all
Completed Not applicable Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Driving Under the Influence
Interventions
BAC Driving Feedback/Warning, No Feedback
Behavioral
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
21 Years to 30 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated May 2, 2023 · Synced May 21, 2026, 10:06 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Distracted Driving, Impaired Driving, Driving Behaviors
Interventions
Persuasive education, WOOP (aka, mental contrasting with implementation intentions., Wish, Outcome, Obstacle, Plan), Customized Habit Tips, Raffle Financial Incentive, Shared Pot Financial Incentive, Weekly SMS Support text, Weekly SMS Encouragement
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
1,139 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 2, 2023 · Synced May 21, 2026, 10:06 PM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
HIV, Cognition - Other, Impaired Driving
Interventions
Speed of Processing Training, Internet Navigational
Behavioral · Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
40 Years and older
Enrollment
217 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Jun 6, 2021 · Synced May 21, 2026, 10:06 PM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Impaired Driving, Sleep Driving
Interventions
Not listed
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 13, 2024 · Synced May 21, 2026, 10:06 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Substance-Related Disorders
Interventions
webCHAT, Usual Care
Behavioral
Lead sponsor
Stanford University
Other
Eligibility
15 Years to 17 Years
Enrollment
198 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
2
States / cities
Denver, Colorado • Dearborn, Michigan
Source: ClinicalTrials.gov public record
Updated Mar 26, 2026 · Synced May 21, 2026, 10:06 PM EDT
Completed Phase 2 Interventional
View directory record Official record
Conditions
Alcohol-related Disorders, Drinking and Driving, Neurological Impairment
Interventions
Click City®: Alcohol
Behavioral
Lead sponsor
Oregon Research Institute
Other
Eligibility
12 Years to 16 Years
Enrollment
2,300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Oct 5, 2016 · Synced May 21, 2026, 10:06 PM EDT
Recruiting Not applicable Interventional
View directory record Official record
Conditions
Parkinson Disease, Multiple Sclerosis, Stroke
Interventions
Low-Fidelity PDS, High Fidelity Fixed-Base Simulator
Device
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
25 Years to 75 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Aug 15, 2024 · Synced May 21, 2026, 10:06 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Distracted Driving, Driving Impaired
Interventions
Free Phone Mounts, Commitment Contract, Personalized Habit Tips, Social Gamification Feedback, "Contest" Financial Incentives
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
1,668 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 1, 2021 · Synced May 21, 2026, 10:06 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Marijuana Impairment, Alcohol Impairment
Interventions
Low Marijuana, Hash, THC, or Grass, High Marijuana, Hash, THC, or Grass, Placebo, 0.05 BAC Alcohol, 0.08 BAC Alcohol
Drug
Lead sponsor
Yale University
Other
Eligibility
21 Years to 40 Years
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated Jun 30, 2025 · Synced May 21, 2026, 10:06 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Drunk Driving
Interventions
Contingency Management, Control
Behavioral
Lead sponsor
The University of Texas Health Science Center at San Antonio
Other
Eligibility
21 Years and older
Enrollment
158 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated May 6, 2024 · Synced May 21, 2026, 10:06 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Marijuana Impairment
Interventions
Low Dose THC Marijuana, High Dose THC Marijuana, Placebo Marijuana
Drug
Lead sponsor
Yale University
Other
Eligibility
20 Years to 40 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated Jul 22, 2024 · Synced May 21, 2026, 10:06 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Cognitive Measures, Driving Simulator Performance
Interventions
Phenytoin, Placebo oral capsule
Drug
Lead sponsor
University of Iowa
Other
Eligibility
25 Years to 60 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2008
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Jun 30, 2021 · Synced May 21, 2026, 10:06 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Driving Behavior, Driving Under the Influence
Interventions
Placebo (Lactose) Capsule, 0.75 mg Alprazolam Capsule, Cannabis (6.18% THC / <0.025% CBD), Cannabis (0%/ THC / 0% CBD)
Drug
Lead sponsor
Timothy L. Brown
Other
Eligibility
19 Years to 45 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Jul 24, 2023 · Synced May 21, 2026, 10:06 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Driving, Intoxication, Impairment, Alcohol Impaired Driving
Interventions
placebo, Alcohol
Drug
Lead sponsor
Rush University Medical Center
Other
Eligibility
21 Years to 80 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2022
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Dec 13, 2022 · Synced May 21, 2026, 10:06 PM EDT
Not listed Phase 1Phase 2 Interventional
View directory record Official record
Conditions
Impaired Driving
Interventions
DriveCam, Feedback
Device · Behavioral
Lead sponsor
Rhode Island Hospital
Other
Eligibility
50 Years to 90 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated May 14, 2018 · Synced May 21, 2026, 10:06 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Cognitive Impairment
Interventions
metaxalone m640, tizanidine
Drug
Lead sponsor
Primus Pharmaceuticals
Industry
Eligibility
20 Years to 70 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Peoria, Arizona
Source: ClinicalTrials.gov public record
Updated Aug 21, 2025 · Synced May 21, 2026, 10:06 PM EDT
Completed Phase 4 Interventional Results available
View directory record Official record
Conditions
Alzheimer's Disease
Interventions
Memantine, Placebo
Drug
Lead sponsor
Florida Atlantic University
Other
Eligibility
60 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2012
U.S. locations
1
States / cities
Boca Raton, Florida
Source: ClinicalTrials.gov public record
Updated Aug 10, 2014 · Synced May 21, 2026, 10:06 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Driving Performance, Cognitive Impairment, Sedation Complication, Mood
Interventions
300 mg Cannabidiol (CBD) oil, Placebo
Drug
Lead sponsor
West Virginia University
Other
Eligibility
18 Years to 30 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Morgantown, West Virginia
Source: ClinicalTrials.gov public record
Updated Sep 14, 2022 · Synced May 21, 2026, 10:06 PM EDT
Terminated No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Ride Sharing, Alcohol Drinking, Alcohol Intoxication, Drug Use, Motor Collision, Sexual Assault
Interventions
Not listed
Lead sponsor
Methodist Health System
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Mar 22, 2026 · Synced May 21, 2026, 10:06 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Marijuana Impairment
Interventions
Medium THC, Placebo THC
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 55 Years
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated Oct 8, 2025 · Synced May 21, 2026, 10:06 PM EDT
Not listed Phase 2 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Cannabis Smoking, Driving Impaired
Interventions
Active smoked cannabis, Placebo smoked cannabis
Drug
Lead sponsor
Bayliss J. Camp, PhD
Government
Eligibility
21 Years to 55 Years
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Sep 28, 2023 · Synced May 21, 2026, 10:06 PM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Chronic Pain
Interventions
Not listed
Lead sponsor
Asokumar Buvanendran
Other
Eligibility
18 Years to 80 Years
Enrollment
450 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2026
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jan 7, 2026 · Synced May 21, 2026, 10:06 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Cannabis Intoxication
Interventions
Cannabis
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
21 Years to 55 Years
Enrollment
199 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Jan 3, 2022 · Synced May 21, 2026, 10:06 PM EDT
Not yet recruiting Phase 1 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Cannabis Use, Impaired Driving, Cognitive Impairment
Interventions
Cannabis
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 60 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 15, 2026 · Synced May 21, 2026, 10:06 PM EDT