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8,000 teens test whether hazard perception training cuts crashes

NCT ID NCT06146634

Knowledge-focused Sponsor: Johns Hopkins Bloomberg School of Public Health Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

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 This study
Running, but no longer taking on new participants.
Completed
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 26, 2026 · Last updated Aug 11, 2026 · Updated 5 times

Summary

This study tests whether a short online hazard perception training can improve driving and reduce crashes among 8,000 teen drivers in Washington State. Participants are randomly assigned to receive the training or a placebo (vehicle maintenance videos). Researchers then track crashes, near-crashes, and hard braking events using in-car sensors. The goal is to see if this low-cost intervention can make roads safer.

What this could mean

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

Active substance
Hazard perception training (behavioral intervention)
What this could lead to
If it works, this could point toward a simple, low-cost way to reduce teen car crashes and save lives.
What could go wrong
This is a large but early-stage behavioral study. The training may not reduce crashes in real-world driving, and results may not apply to all teen drivers.

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

About 8,000 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jul 2024

Expected to finish

Dec 2027

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

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

Ages

15 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: * Enrollment in a driver training course through the 911 driving school in Washington State. Exclusion Criteria: * Participants must meet the above criteria. * Additionally, participants will be excluded if either the participant or the participant's parent opts-out.

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As listed by the trial registrant

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

Driving behavior

Contacts and locations

Locations

  • The Driver Training Group

    Seattle, Washington, 98125, United States