The feature that a passenger bus carries more passengers determines that it has a different structure from other cars.

There are three types of structures in the compartment structure and equipment passenger compartment: 1 Non-loading compartments, that is, the compartments are mounted on the chassis frame of the vehicle and are connected with the frame flexibly at multiple points. Most of the load is borne by the frame. 2 Semi-loaded carriages, that is, the crossbeams of the frame are widened to be equal to the width of the carriage and rigidly connected to the frame of the carriage. This structure makes the car and the frame combined into one body, and the car frame also bears part of the load. 3 load-carrying cars, no frame, and the car body is composed of skeleton and skin as a whole to bear the full load. This structure can reasonably use materials to reduce the weight of the car, but the manufacturing process is more complicated.

The main equipment of the carriages are seats, doors and side windows. Seat dimensions are generally determined according to ergonomic requirements. Seats before and after the seat are generally 680 to 720 millimeters. Advanced coaches can reach more than 750 millimeters. The seats have high backrests and pillows, and can adjust the backrest inclination. The passenger doors of passenger compartments are set according to the passenger capacity. Small passenger buses generally have only one passenger door, and they often use external sliding doors. Passenger vehicles with medium or large roads are equipped with 1 or 2 passenger doors or a passenger door and a security gate. The city bus and short-distance passenger vehicle are equipped with two passenger doors. The articulated coach is generally equipped with front, middle and rear passenger doors. Most of them are double-folded or four-folded doors, pneumatic or electric, and controlled by the driver or flight attendant. . The front window of the carriage adopts the panoramic windshield to enlarge the driver's vision and reduce the blind spot. There are a variety of side windows, such as window, window, window, and fixed window. In order to improve the occupant's field of vision, the side windows continue to expand and develop towards large fixed side windows.