Clinical trial NCT06101251: A Randomized Field Trial of Smartphone-based Feedback to Encourage Safe Driving
Official title: A Randomized Field Trial of Smartphone-based Feedback Designed to Encourage Safe Driving: Comparing Focused and Self-chosen Goals to Standard UBI Messaging
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Distracted Driving
Injury Prevention
Behavioral Economics
Keywords: Distracted Driving
Behavioral Incentives
Lead sponsor: University of Pennsylvania
Sponsor class: OTHER
Collaborators: name: AAA Foundation for Traffic Safety
First posted: 2023-10-26
Enrollment: 1451
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: PARALLEL
Intervention model description: At the end of the 6-week baseline period, participants who have the app installed and collecting data, and who meet a minimum number of driver trips with trips scores, will be randomized into one of 4 arms via Way to Health:

Arm 1, Control: Way to Drive app only monitors trips in the background

Arm 2, Standard feedback + UBI-like Financial Incentive: Receive weekly feedback on all four behaviors and overall driver safety; safety tips on all four behaviors; up to $100 based on their overall driver safety at end of intervention.

Arm 3, Assigned Goal + UBI-like Financial Incentive: Receive weekly feedback on behavior that presents greatest opportunity for improvement; safety tips on this behavior; up to $100 based on their overall driver safety at end of intervention.

Arm 4, Self-Chosen Goal + UBI-like Financial Incentive: Receive weekly feedback on behavior of their own choosing; safety tips on this behavior; up to $100 based on their overall driver safety at end of intervention.
Primary purpose: TREATMENT

Brief summary: The study team are proposing to conduct a randomized controlled trial to determine the effectiveness of focused feedback vs standard feedback and self-chosen vs assigned goals on driving behaviors targeted by behavior-based insurance apps: hard braking, fast acceleration, handheld phone use, and speeding. The interventions arms will receive feedback on their driving behaviors, tips for safe driving, and a UBI-like financial incentive. The Penn research team will use Meta advertisements to recruit for the study and determine eligibility via an online survey. Those who enroll will undergo a 6-week run-in period during which their driving trips will be monitored by a mobile app. Individuals with a sufficient number of trips during this period will be randomly assigned to one of four arms for the intervention period. Target enrollment is 1,300 participants (325 per trial arm). The power analysis assumed an attrition rate of 20% over the course of the study.


Eligibility criteria: Inclusion Criteria:

* 18 years of age or older
* Has an Apple or Android smartphone (iPhone iOS 12 or later or Android OS 7 or later)
* Drives at least 2 days per week
* English reading ability
* Passes an attention check
* Provides valid email address, cell number, name, address, and date of birth

Exclusion Criteria:

-

Primary outcomes:
measure: Overall Driving Score
timeFrame: 12 weeks of the intervention period + separate analysis of 6 week post intervention.
Secondary outcomes:
measure: Distraction score
timeFrame: 12 weeks of the intervention period + separate analysis of 6 week post intervention.
measure: Speeding score
timeFrame: 12 weeks of the intervention period + separate analysis of 6 week post intervention.
measure: Braking score
timeFrame: 12 weeks of the intervention period + separate analysis of 6 week post intervention.
measure: Acceleration Score
timeFrame: 12 weeks of the intervention period + separate analysis of 6 week post intervention.
Other outcomes:
measure: Handheld phone use per hour of driving
timeFrame: 12 weeks of the intervention period + separate analysis of 6 week post intervention.
measure: Overall riskiness metric
timeFrame: 12 weeks of the intervention period + separate analysis of 6 week post intervention.
measure: Disabled SMS messaging
timeFrame: 18 weeks of the study (6 - week baseline; 12- week intervention period)
measure: Unenrolled
timeFrame: 18 weeks of the study (6 - week baseline; 12- week intervention period)
measure: Net Promoter Score (NPS)
timeFrame: At 24 weeks.
measure: 4-item acceptability scale
timeFrame: At 24 weeks.
measure: Intervention helpfulness.
timeFrame: At 24 weeks.
measure: Hard braking events per 100 miles of driving
timeFrame: 12 weeks of the intervention period + separate analysis of 6 week post intervention.
measure: Minutes of speeding per hour of driving.
timeFrame: 12 weeks of the intervention period + separate analysis of 6 week post intervention.
measure: Fast acceleration events per 100 miles of driving.
timeFrame: 12 weeks of the intervention period + separate analysis of 6 week post intervention.
Locations:
city: Philadelphia
country: United States
facility: University of Pennsylvania
state: Pennsylvania
Study officials:
References: