Increasing Seat Belt Wearing and Decreasing Handheld Phone Use While Driving

Not Applicable

Completed

• Conditions: Driving Behaviors; Impaired Driving; Distracted Driving

• Registration Number: NCT05469477
• Lead Sponsor: University of Pennsylvania

Brief Summary

The study team is proposing to conduct a randomized controlled trial to determine the effectiveness of behavioral and financial incentives on phone use while driving and seat belt adherence. Each arm will receive a support text if their app is not collecting data. The behavioral engagement intervention includes persuasive education, mental contrasting with implementation intentions, customized habit tips, weekly feedback about participants' streaks, and encouraging SMS texts. The two financial incentive interventions add on weekly raffles or shared pots for participants with perfect streaks.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2022-07-18
• Study First Submitted QC: 2022-07-18
• Study First Posted: 2022-07-21
• Study Start: 2023-03-12
• Primary Completion: 2023-06-29
• Study Completion: 2023-06-29
• Status Verified: 2023-09
• Last Update Submitted: 2023-09-29
• Last Update Posted: 2023-10-03

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 1139

Inclusion Criteria

• Are a GM/OnStar customer.
• Are 18 or older.
• Meet minimum trip requirements.
• Uses vehicle with OnStar
• At least 5 weeks of baseline trip data with >=8 trips/week at baseline on average
• Baseline seat belt use <= 75% on trips less than 2 miles and <= 90 on trips greater than 2 miles
• English reading ability
• Have an email address
• Have a smartphone with iPhone iOS 12 or later or Android OS 7 or later

Exclusion Criteria

• You are unable to read and understand English

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: FACTORIAL

Primary Outcome Measures

Name	Time	Method
Proportion of trips with seat belt use	105 days	Calculated as the number of trips during which a driver's seat belt click was detected, divided by total number of trips (defined as 1/10 of a mile or greater).

Secondary Outcome Measures

Name	Time	Method
Seconds of active (handheld) phone use per hour of driving	105 days	This is a composite outcome that measures the proportion of total trip time in which the driver is engaged in handheld phone call use or non-call handheld use (e.g. texting, swiping, and typing), as measured by the Way to Drive app.

Trial Locations

Locations (1)

University of Pennsylvania; 🇺🇸 Philadelphia, Pennsylvania, United States