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By making fuel economy visible to both the owner and the public, the tool encourages drivers to opt for more environmentally friendly vehicles.

This project introduces a simple, yet effective tool to encourage car owners to choose more fuel-efficient or electric vehicles by utilizing color-coded stickers. The concept, based on disclosure theory, involves the DMV requiring vehicles to display a small colored sticker on the dashboard or license plate that indicates the car’s fuel efficiency rating.
This low-cost, high-impact tool taps into social signaling to subtly persuade car owners to make more sustainable vehicle choices, contributing to long-term energy efficiency improvements.



