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Based on the fuel, the market is segmented into diesel, CNG, electric and others. In 2024, the diesel segment accounted for over 51% of the market share and is expected to exceed USD 490 billion by 2034. The diesel transit bus market is evolving with advanced emissions control technologies. Manufacturers are incorporating selective catalytic reduction (SCR), diesel particulate filters (DPF), and exhaust gas recirculation (EGR) systems to meet stringent Euro VI and EPA 2010 standards. These technologies significantly reduce nitrogen oxide (NOx) and particulate matter emissions, enabling diesel buses to align with environmental regulations.
Hybrid diesel-electric powertrains are gaining traction as a transitional solution between conventional diesel and full electrification. By combining diesel engines with electric motor components, these systems improve fuel efficiency, reduce costs, and lower emissions. Transit agencies are adopting this approach to leverage existing diesel infrastructure while progressing toward electrification, benefiting from features like regenerative braking, battery storage, and optimized power management.
Based on the seating capacity, the transit bus market is divided into below 40 seats, 40-70 seats, and above 70 seats. By 2034, the 40-70 seats segment is expected to exceed USD 560 billion due to several key factors. The 40-70 seat transit bus segment is undergoing significant advancements with the adoption of electric powertrain technologies. Manufacturers are focusing on high-capacity battery systems optimized for urban transit, enhancing range, charging efficiency, and cost-effectiveness.
Innovations in lithium-ion and solid-state batteries are driving longer operational cycles, faster charging, and higher energy density. Transit agencies are prioritizing electric buses to comply with environmental regulations, reduce emissions, and benefit from government incentives. This shift is supported by improved battery performance, lower production costs, and expanded electric mobility infrastructure.
Manufacturers are leveraging modular design architectures to offer customizable solutions for diverse urban transit needs. These platforms enable quick adjustments for passenger requirements, accessibility, and operational constraints while simplifying maintenance and fleet management. Standardized chassis and body structures allow efficient adaptation for varying routes, capacities, and specialized services.
China transit bus market accounted for over 55% of the revenue share in 2024, driven by stringent government policies to reduce emissions and improve urban air quality. Substantial subsidies and incentives support the transition to electric vehicles (EVs), with cities like Beijing, Shanghai, and Shenzhen relying heavily on electric buses for public transport. Leading manufacturers such as BYD and Yutong are advancing China's goal of a fully electric public transport fleet, aligning with its carbon reduction and sustainability objectives.
European governments are accelerating the shift to zero-emission public transport through subsidies, tax breaks, and grants. Initiatives like the EU Green Deal and Fit for 55 are shaping policies in countries such as Germany, France, and the UK, driving the adoption of electric and hydrogen buses. Manufacturers like Volvo and Daimler are expanding their electric bus offerings to meet regional sustainability goals and reduce urban emissions.
North America, led by the U.S. and Canada, is rapidly transitioning to electric public transit buses, supported by federal and state programs like the U.S. Low-No Program. Cities such as Los Angeles and New York are integrating electric buses to meet sustainability targets. Manufacturers, including NFI Group and Volvo, are delivering electric buses tailored to North American requirements, focusing on extended range and performance in harsh climates.