Electric buses, which have zero tailpipe emissions, hold the potential to provide outsized air quality and climate benefits. Faster adoption of cleaner buses is an important part of the bigger climate solution, helping put cities on track towards sustainability. Despite the promise of electric buses, however, their adoption has been uneven and varied in scale. Implementation has not accelerated fast enough for the world to meet transport-related climate objectives. This report identifies and presents the main barriers that cities face when implementing e-buses, especially in the global south. The barriers outlined in this report are meant to serve as cautionary tales. The intent of this publication is to provide a map of hazards to help guide high-level planning officials safely along the road to electric bus adoption.