There are many dimensions for bus classification. This article primarily categorizes buses based on four main factors: power source, vehicle size, operating model, and technical level.
I. Classification by Power Source
This is the most core classification method for modern buses, reflecting technological developments and environmental trends.
Diesel Buses
Features: Traditional mainstream models with mature technology, long range, and convenient refueling.
Current Status: Due to emission and noise issues, they are gradually being replaced by new energy vehicles in large cities.
Natural Gas Buses (NGV)
Classifications: Includes compressed natural gas (CNG) and liquefied natural gas (LNG).
Features: Cleaner than diesel buses, emitting fewer pollutants and offering lower operating costs.
Hybrid Electric Vehicles (HEV)
Features: Equipped with both a fuel engine and an electric motor. Electricity is used during starting and low speeds, while gasoline is used at high speeds, effectively saving fuel and reducing emissions in urban areas.
Speaking of this, it's worth mentioning the year and manufacturer of China's first hybrid bus: 2002, Yangtse, model: WG6120 hybrid bus. As the pioneer of new energy vehicles in Hubei, it made a significant contribution to the development of new energy vehicles. Subsequently, in 2005, China's first batch of hybrid buses officially entered the Wuhan market (Bus Route 510).

Pure Electric Buses (BEV)
Features: Powered entirely by large-capacity battery packs and driven by electric motors. They offer zero emissions, low noise, smooth operation, and low maintenance costs. They are currently the mainstream model being actively promoted in major cities and rely on charging stations for recharging.
In 2012, Wuhan's first batch of pure electric buses entered service. The first five Yanstse brand electric buses were deployed on demonstration routes. At the time, many of the technological innovations implemented by Yanstse were national firsts.

Hydrogen Fuel Cell Buses (FCEV)
Features: They generate electricity through hydrogenation chemical reactions, emitting only water. Hailed as the "ultimate environmentally friendly vehicle," they offer fast hydrogen refueling (similar to refueling) and a long range. However, costs are high, and infrastructure such as hydrogen refueling stations is still in its early stages of development.
II. Classification by Vehicle Size and Passenger Capacity
This classification directly relates to the bus's application scenarios.
Large Bus
Length: Typically 10-12 meters or longer.
Features: The most common bus type, either single-unit or articulated, with the highest passenger capacity, primarily used on urban arterials and routes with high passenger volume.
Yangtse's Veyron G52 (WG6120BEVHR) trolleybus, custom-built for Marrakech, Morocco, served the 22nd United Nations Climate Change Conference.

Medium Bus
Length: Typically 8-10 meters.
Features: More flexible than large buses, suitable for routes with medium passenger volume or urban branch routes.
Mini Bus / Micro-Circulation Bus
Length: Typically 6-8 meters.
Features: Compact and maneuverable, capable of navigating narrow streets, neighborhoods, and parks. Primarily used for connecting to subway stations (the "last mile"), community micro-circulation routes, and scenic sightseeing.
Like this one

Articulated Bus (also called Channel Bus)
Features: Consists of two or more articulated carriages, typically exceeding 13 meters in length. With a large passenger capacity, it is commonly used in Bus Rapid Transit (BRT) systems or conventional routes with extremely high passenger volume.
Yangtse Veyron G5B pure electric fast-charging articulated bus, with its 18-meter length and capacity of approximately 150 passengers, is known as the "aircraft carrier" of the public transportation industry.

Double-Decker Bus
Features: With two upper and lower decks, it offers maximum passenger capacity within a limited footprint, making it particularly suitable for tourist routes or cities with limited land resources.
III. Classification by Operational Characteristics and Service Functions
This classification determines the role and positioning of buses.
Conventional Buses
As the most common form of public transportation, conventional buses operate along fixed routes and at fixed stops, primarily serving the daily commuting needs of the general public.
Yangtse Ultra-Light One G9, an innovative product, combines modular construction with panoramic sightseeing capabilities. By utilizing lighter materials, simplified processes, and efficient methods, it achieves a 20% reduction in weight and 15% lower overall vehicle energy consumption than comparable fuel-powered buses.

Bus Rapid Transit (BRT)
BRT is an efficient ground-based bus system that utilizes dedicated right-of-way (e.g., bus lanes), platform ticketing, level boarding, and signal priority. Its operational efficiency is comparable to that of the subway, and it typically utilizes large, articulated vehicles.
In 2016, the Xiongchu Avenue BRT bus, manufactured by Yangtse, was 18 meters long and capable of carrying up to 135 passengers, marking the official launch of Wuhan's BRT system.
Commuter Buses/Customized Buses
This type of bus serves specific groups, such as corporate employees or school teachers and students. It operates on relatively fixed routes, primarily during morning and evening rush hours, providing point-to-point connections between residential areas and workplaces or schools.
Sightseeing Buses
Sightseeing buses typically feature double-decker or open-roof designs, cover a city's famous attractions, and often provide onboard audio guides. Their fare structure and operating model differ from those of regular buses.
Intercity buses
Designed for long-distance travel between cities, these vehicles are typically equipped with more comfortable amenities to meet the needs of passengers on longer journeys.
Community buses/shuttle buses
These buses primarily operate on shorter, fixed routes. Their core function is to solve the "last mile" travel problem, connecting communities with key locations such as subway stations, bus hubs, and airport terminals. Small and medium-sized buses are typically used.
Always Yangtse

School buses
They are designed specifically for transporting students to and from school, ensuring a safe and convenient commute.
IV. Classification by Technical Level and Configuration
Low-floor buses
Features: Low-floor buses have no steps leading to the main level. The interior floor is very low (usually ≤35cm), allowing passengers to board and exit the bus without having to step up, greatly facilitating the transportation of the elderly, children, the disabled, and passengers carrying luggage. They have become a standard feature of modern urban public transportation. Yangtse low-floor air-conditioned bus since 2004

I want to know more about the Yangtse brand history
https://www.yangtseauto.com/history
Accessible Bus
Features: Based on the low-floor bus, it is equipped with a wheelchair ramp or wheelchair turntable and an in-vehicle wheelchair securement area, fully embodying humanistic care.
Summary
|
Classification Dimension |
category |
Main Features |
|
Power source |
diesel buses |
The technology is mature and the battery life is long, but the pollution and noise are high. |
|
Natural gas buses (NGV) |
Cleaner and less expensive than diesel vehicles |
|
|
Hybrid buses (HEV) |
Hybrid electric vehicle, energy saving and emission reduction, especially suitable for frequent start-stop |
|
|
Pure electric bus (BEV) |
Zero emissions, low noise, low maintenance costs, the current mainstream |
|
|
Hydrogen fuel cell buses (FCEV) |
Ultimate environmental protection, only emitting water, fast hydrogen refueling, long driving range |
|
|
Vehicle size |
Large buses (10-12m+) |
Large passenger capacity, used on main roads |
|
Medium buses (8-10m) |
High flexibility, suitable for branch lines |
|
|
Small/Micro-circulation bus (6-8m) |
Small and flexible, suitable for communities and connecting the "last mile" |
|
|
Articulated bus (13m+) |
Large passenger capacity, used forBRTor high passenger flow routes |
|
|
Double-decker bus |
Large passenger capacity, suitable for sightseeing or land-constrained cities |
|
|
Service Features |
Regular bus |
Fixed routes, serving daily commuters |
|
Bus Rapid Transit (BRT) |
Dedicated right of way, ticket sales at the platform, as efficient as the subway |
|
|
commuter bus/Customized bus |
Point-to-point service for specific groups (enterprises, schools) |
|
|
Tourist sightseeing bus |
Provide interpretation services at scenic spots along the way |
|
|
Intercity Bus |
Designed for long-distance travel between cities |
|
|
Community/Shuttle bus |
Solving the "last mile" problem |
|
|
school bus |
Dedicated to picking up and dropping off students |
|
|
Technical Configuration |
low-floor bus |
Convenient boarding and alighting is the standard of modern public transportation |
|
Accessible buses |
Equipped with wheelchair pedals and dedicated areas to care for special groups |
