Bus doors are of various types of buses with doors including conventional doors,

folding door A folding door is a type of door which opens by folding back in sections or so-called panels. Folding doors are also known as ‘bi-fold doors', in spite of them most often having more than two panels. Another term is ‘concertina’ doors, ...

s, sliding plug doors, coach doors and inward gliding doors.

Conventional door

A conventional door, also known as a regular door or

vehicle door A vehicle (from la, vehiculum) is a machine that transports people or cargo. Vehicles include wagons, bicycles, motor vehicles (motorcycles, cars, trucks, buses, mobility scooters for disabled people), railed vehicles (trains, trams), wate ...

is a type of door that is hinged at the front-facing edge of the door, and so allows the door to swing outward from the hull of the bus. These doors are relatively safe, in that if they are opened during forward motion of the vehicle, the wind resistance will work against the opening door, and will effectively force its closure. File:Geman police car 02 (cropped).JPG, Passenger side Mercedes-Benz O 309 File:Iveco 370 4131.jpg, Driver side Iveco 370

Folding doors

can have an electric folding door mechanism or manually operated. It is widely used on some older model city buses,

mini-buses A minibus, microbus, minicoach, or commuter (in Zimbabwe) is a passenger-carrying motor vehicle that is designed to carry more people than a multi-purpose vehicle or minivan, but fewer people than a full-size bus. In the United Kingdom, t ...

and

school buses A school bus is any type of bus owned, leased, contracted to, or operated by a school or school district. It is regularly used to transport students to and from school or school-related activities, but not including a charter bus or transit bus ...

that have no air sources. Its features a whole frame design which can give it superior performance and excellent durability. It can be used in extremely hot and cold climates. File:GreaterManchester7214.jpg, Folding doors (four leaves) Transperth Volvo B7RLE (Volgren Optimus) TP2726 @ Curtin University Bus Station (cropped).jpg, Folding doors (two leaves) File:Ikarus iett istanbul.JPG, A Turkish bus with folding doors

Sliding plug doors

Sliding plug doors open by sliding horizontally, whereby the door is either mounted on, or suspended from a track. They are also used on commercial vans, trains and other vehicles. They allow a large opening for passengers to enter or exit without obstructing access. File:Sliding plug doors, Metroline TE920 (LK58 KFW),(cropped).jpg, Sliding plug doors on a London bus File:Praha,_DOD_2006_Hostiva%C5%99,_Plo%C5%A1ina_autobusu_Karosa_pro_invalidy.JPG, Double panel with wheelchair lift extended

Coach doors

File:Myway.jpg, Both Single and double paneled File:National Express 7102 Caetano Levante FJ08 KNW Metrocentre 2009 pic 2.JPG, Single paneled

Inward sliding doors

Inward sliding doors combine rotary and linear movements to slide the door wings to the side of the doorway as they open. File:Victory_Liner_Incorporated_-_MAN_Diesel_16-290_-_1633.jpg, Inner sliding door (single panel) File:Southern Vectis 1103 HW08 AOS entrance (cropped).JPG, Inner sliding doors (double panel) File:Southern Vectis 1114 HW58 ATK (cropped)(doors).JPG, Closed inner sliding doors (double panel)

References