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Green tech or hidden stress? bus Drivers' hearts monitored behind the wheel

NCT ID NCT06688721

Knowledge-focused Sponsor: Center for Primary Care and Public Health (Unisante), University of Lausanne, Switzerland Source: ClinicalTrials.gov ↗

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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 Results may not be published yet.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
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Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Sep 18, 2026 · Last updated Sep 18, 2026

Summary

Researchers at Unisante in Switzerland are studying whether eco-driving assistance systems affect the health of professional bus drivers. About 50 drivers will spend some workdays driving buses with the fuel-saving feedback system and other days without it. The team will track heart rate variability through a wearable ECG and ask drivers to rate their stress at the end of each shift. The goal is to see whether the technology helps the environment at a hidden cost to driver well-being.

What this could mean

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

Active substance
eco-driving assistance system
What this could lead to
If eco-driving systems raise driver stress, transit agencies could redesign the feedback to protect worker health while still cutting emissions.
What could go wrong
The trial is small and observational in design, so it cannot prove that eco-driving systems cause stress or harm. Drivers who know they are being monitored may change their behavior, and results from one Swiss bus company may not apply elsewhere.

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

50 people

The number who actually took part.

Started

Mar 2025

Finished

Jan 2026

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

18 to 65 years

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: * adult active bus driver * having signed the informed consent * having worked for at least one year as TPF bus driver * working at least 30 hours a week * no planned extended absences in the next 6 months (civil service, military service, long- term leave, retirement) Exclusion Criteria: * wearing a medical active implant (pacemaker, cardiac defibrillator, neurostimulator, other electronic implant) * known allergy or skin sensitivity to plasters

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As listed by the trial registrant

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

Healthy

Contacts and locations

Locations

  • TPF

    Givisiez, Canton of Fribourg, 1762, Switzerland

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