Cities worldwide are embracing cleaner and more efficient transportation solutions, with a focus on zero emissions vehicles (ZEVs) and double decker buses. ZEVs, including electric vehicles (EVs) and hydrogen fuel cell vehicles (FCEVs), play a crucial role in reducing air pollution and greenhouse gas emissions by operating without tailpipe emissions. EVs, powered by electricity stored in batteries, offer practicality for daily and long-distance travel, decreasing reliance on fossil fuels. FCEVs, generating electricity from hydrogen and oxygen with water vapor as the byproduct, promise comparable driving ranges and quick refueling but require a robust hydrogen refueling infrastructure for widespread adoption. These zero emissions vehicles not only benefit the environment but also provide cost savings and incentives for consumers. Double decker buses, known for their two-level design, excel in transporting large numbers of passengers in congested urban areas without needing extra road space. Their increased capacity and efficiency help reduce traffic congestion and environmental impact. Modern double decker buses come with amenities like air conditioning and Wi-Fi, enhancing passenger comfort and offering panoramic views from the upper deck. Cities are integrating zero emissions technologies into double decker bus fleets, combining the benefits of traditional buses with eco-friendly operation. The integration of ZEVs and double decker buses creates a powerful synergy for sustainable urban mobility. These technologies reduce pollution, greenhouse gas emissions, and traffic congestion while meeting the transit needs of growing urban populations. By adopting these innovations, cities ensure a cleaner, more efficient, and enjoyable transportation experience for residents, paving the way for a greener future. The partnership between zero emissions vehicles and double decker buses embodies a modern, sustainable transportation strategy that addresses urban mobility challenges effectively.