Do mobile applications foster sustainable mobility? Evidence from a field experiment

Area of Science:

• Environmental Science
• Behavioral Science
• Computer Science

Background:

• Mobile applications show potential for promoting sustainable mobility.
• Evaluating their effectiveness faces empirical challenges, including data collection and participant engagement.
• Previous studies often lack robust methodologies for assessing real-world impact.

Purpose of the Study:

• To evaluate the effectiveness of a mobile application in fostering sustainable mobility behavior.
• To address empirical challenges in evaluating mobile health interventions through a rigorous randomized controlled trial.
• To assess the impact of gamification and personalized emissions data on user behavior.

Main Methods:

• A 5-week randomized controlled trial with 410 participants.
• Unobtrusive tracking of mobility behavior for both control and treatment groups.
• The treatment group used the 'Swiss Climate Challenge App' featuring individual carbon emissions data and gamification.

Main Results:

• A 15% reduction in emissions was observed in the treatment group compared to the control group.
• Statistically significant emission reductions were found in the second half of the intervention, in medium population density areas, and among men.
• The study had limitations in statistical power to confirm a zero average effect across all participants.

Conclusions:

• Mobile applications, like the 'Swiss Climate Challenge App', can potentially reduce individual carbon emissions.
• Targeted interventions and features may be more effective for specific demographic or geographic groups.
• Larger-scale studies are recommended to validate these findings and explore broader implementation.