Bus doors#Sliding plug doors
{{short description|Various types of doors on buses and coaches}}
{{unreferenced|date=January 2021}}
Types of doors on buses and coaches include conventional doors, folding doors, sliding plug doors, coach doors and inward gliding doors.
Conventional door
A conventional door, also known as a regular door or vehicle door 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
A folding door can have an electric folding door mechanism or manually operated. It is widely used on some older model city buses, mini-buses and school buses 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)
File:Ikarus_260_of_the_İETT.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:Bruce_Coaches_-_National_Express_FJ57_KHW_(8182293263).jpg|Single paneled
Inward gliding doors
Inward gliding doors combine rotary and linear movements to glide the door wings to the side of the doorway as they open.
File:Victory Liner Incorporated - MAN Diesel 16-290 - 1633.jpg|Inner gliding door (single panel)
File:Southern Vectis 1103 HW08 AOS entrance (cropped).JPG|Inner gliding doors (double panel)
File:Southern Vectis 1114 HW58 ATK (cropped)(doors).JPG|Closed inner gliding doors (double panel)
File:Transperth Volvo B7RLE (Volgren Optimus) TP2726 @ Curtin University Bus Station (cropped).jpg|Inner gliding doors (two leaves)