Which public transportation sustainability initiative has achieved the largest documented reduction in carbon emissions per passenger mile in North America?

The transportation industry faces increasing pressure to reduce its environmental impact. Many companies have launched innovative sustainability initiatives that are reshaping how people and goods move around the world. This poll tests your knowledge about a groundbreaking sustainability program that significantly reduced carbon emissions in public transportation. Do you know which transportation sustainability initiative has made the biggest impact?

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

Los Angeles Metro's transition to an all-electric bus fleet by 2030
Toronto Transit Commission's hydrogen fuel cell pilot program
Portland TriMet's wind-powered light rail system
New York MTA's regenerative braking energy recovery system