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ClinicalTrials.gov public records Last synced Oct 23, 2026, 9:54 AM EDT

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Showing 1–24 of 43 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Driving Impaired Clear all
Completed Phase 1 Interventional Accepts healthy volunteers

Neuroscience of Marijuana Impaired Driving

NCT02757313
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
18 Years to 40 Years
Enrollment
62 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2021
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated Jul 23, 2024 · Synced Oct 23, 2026, 9:54 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Delta-8-THC vs. Delta-9-THC on Simulated Driving Performance

NCT06218550
View directory record Official record
Conditions
Cannabis
Interventions
Delta-9-THC, Delta-8-THC, Placebo
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 55 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 20, 2026 · Synced Oct 23, 2026, 9:54 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Project MADD - NIH Underage DUI and Ride

NCT03506880
View directory record Official record
Conditions
Underage Drinking, Driving Under the Influence, Drinking, Teen
Interventions
MADD Materials, Surgeon General Materials
Behavioral
Lead sponsor
Penn State University
Other
Eligibility
15 Years to 18 Years
Enrollment
2,352 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2022
U.S. locations
1
States / cities
University Park, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 29, 2023 · Synced Oct 23, 2026, 9:54 AM EDT
Completed Phase 2 Interventional

Evaluation of an School-based Alcohol Prevention Program for Middle School Students

NCT01847183
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 6, 2016 · Synced Oct 23, 2026, 9:54 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Validation of Alcohol Level Identification Using DRIVESC

NCT07282405
View directory record Official record
Conditions
Driving Impaired
Interventions
DRIVESC, Alcohol
Diagnostic Test · Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 64 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Feb 27, 2026 · Synced Oct 23, 2026, 9:54 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Examine the Feasibility of a Standardized Field Test for Marijuana Impairment: Laboratory Evaluations

NCT03191084
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 23, 2024 · Synced Oct 23, 2026, 9:54 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

The Effects of Cannabidiol on the Driving Ability of Healthy Adults

NCT04590495
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 15, 2022 · Synced Oct 23, 2026, 9:54 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Validation of Driving Simulator to Blood Alcohol Concentration Standards for Impaired Driving

NCT00559819
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 14, 2022 · Synced Oct 23, 2026, 9:54 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Cannabis Impairment Detection Application (CIDA)

NCT04230460
View directory record Official record
Conditions
Driving Under the Influence, Marijuana Intoxication, Alcohol Intoxication
Interventions
Cannabis (THC) (Inhaled) Placebo, Cannabis (High% THC) (Inhaled), Cannabis (Very High% THC) (Inhaled), Alcohol (oral)
Drug
Lead sponsor
Advanced Brain Monitoring, Inc.
Industry
Eligibility
18 Years to 50 Years
Enrollment
124 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Jul 12, 2021 · Synced Oct 23, 2026, 9:54 AM EDT
Not listed Phase 1Phase 2 Interventional

Video Feedback Intervention for Cognitively Impaired Older Drivers

NCT02600026
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 15, 2018 · Synced Oct 23, 2026, 9:54 AM EDT
Completed Phase 4 Interventional Results available

Delaying the Progression of Driving Impairment in Individuals With Mild Alzheimer's Disease

NCT00476008
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 11, 2014 · Synced Oct 23, 2026, 9:54 AM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Objective Assessment of the Effects of Shift Work on Drowsiness and Driving Impairment in Hospital Staff

NCT01672489
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 14, 2024 · Synced Oct 23, 2026, 9:54 AM EDT
Completed Not applicable Interventional

Speed of Processing Training in Adults With HIV

NCT02758093
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 7, 2021 · Synced Oct 23, 2026, 9:54 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Alcohol Impaired Driving: From the Laboratory to the Natural Environment

NCT03846050
View directory record Official record
Conditions
Drinking and Driving
Interventions
BAC feedback/warning, No BAC feedback/warning
Behavioral
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
21 Years to 35 Years
Enrollment
230 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2024
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 18, 2024 · Synced Oct 23, 2026, 9:54 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Sedative-Anxiolytic Effects on Simulated Driving Performance

NCT03297944
View directory record Official record
Conditions
Psychomotor Impairment
Interventions
Alprazolam 2mg (2ALP/PLC), Alprazolam 1mg (1ALP/PLC), Alprazolam 0.5mg (0.5ALP/PLC), Zolpidem 10mg (ZOL/PLC), Placebo (PLC/PLC), Alprazolam 1mg (PLC/ALC)
Drug
Lead sponsor
Marion Coe
Other
Eligibility
18 Years to 50 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Jan 29, 2020 · Synced Oct 23, 2026, 9:54 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

The Impact and Detection of Driving Impairments Associated With Acute Cannabis Smoking

NCT02849587
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 4, 2022 · Synced Oct 23, 2026, 9:54 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Fire Fighter Fatigue Management Program: Operation Healthy Sleep

NCT01988129
View directory record Official record
Conditions
Shift-Work Sleep Disorder, Insomnia, Restless Leg Syndrome, Obstructive Sleep Apnea, Impaired Driving, Injuries
Interventions
Sleep disorders education and screening
Other
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
1,189 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2013
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 16, 2017 · Synced Oct 23, 2026, 9:54 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Validation of the Drug Impaired Driving Scenario (DIDS) on the CRCDS-miniSim

NCT04970342
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 25, 2023 · Synced Oct 23, 2026, 9:54 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Evaluation of an Interactive Mobile Phone-Based Brief Intervention to Reduce Substance-Impaired Driving

NCT05537116
View directory record Official record
Conditions
Driving Impaired
Interventions
Personalized feedback, Personalized feedback and text messages, Information Only
Behavioral
Lead sponsor
Western Kentucky University
Other
Eligibility
18 Years to 29 Years
Enrollment
149 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Bowling Green, Kentucky
Source: ClinicalTrials.gov public record
Updated Aug 31, 2026 · Synced Oct 23, 2026, 9:54 AM EDT
Completed Phase 4 Interventional Results available

Vivitrol for Reducing Driving While Impaired Behavior Among Repeat Offenders

NCT00537745
View directory record Official record
Conditions
Alcohol Consumption
Interventions
Vivitrol (Medication Therapy), Medication Management Therapy
Drug · Other
Lead sponsor
Pacific Institute for Research and Evaluation
Other
Eligibility
18 Years and older
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated Aug 27, 2012 · Synced Oct 23, 2026, 9:54 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Examine the Feasibility of a Standardized Field Test for Marijuana and Alcohol Impairment: Laboratory Evaluations

NCT04856566
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 Jul 1, 2025 · Synced Oct 23, 2026, 9:54 AM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Neuroscience of Alcohol and Marijuana Impaired Driving

NCT03431987
View directory record Official record
Conditions
Marijuana Usage, Alcohol Drinking
Interventions
One day with a dose of placebo cannabis paired with alcohol, One day with a dose of active THC cannabis paired with alcohol
Drug
Lead sponsor
Hartford Hospital
Other
Eligibility
21 Years to 40 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2023
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 5, 2022 · Synced Oct 23, 2026, 9:54 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

High Confusion: Cannabis & Driving

NCT06236815
View directory record Official record
Conditions
Impairment, Cognitive, Impairment of Attention, Impairment, Psychomotor
Interventions
Delta-9-THC, Delta-8-THC, Placebo
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 49 Years
Enrollment
5 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 10, 2025 · Synced Oct 23, 2026, 9:54 AM EDT
Terminated No phase listed Observational Accepts healthy volunteers

The Rise of Ride Sharing Companies and Trends in Impaired Driving Accidents

NCT04564599
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 23, 2026 · Synced Oct 23, 2026, 9:54 AM EDT