To encourage citizens to use public transportation more, in order to work towards a net-zero carbon emission goal, the transportation departments of Keelung City, Taipei City, New Taipei City, and Taoyuan City, along with public transportation operators and EasyCard Corporation, have jointly launched the "My Carbon Reduction Passbook" campaign. Participants can accumulate carbon savings and redeem rewards. The event will take place from January 1 to December 31, 2025. For more information, visit the official website of the campaign: https://co2-passbook.com/