ISO 15845:2014规定了封闭式自行式登机车辆的最低功能和安全要求，该车辆设计用于将机动性降低的人员运送到主线民用运输飞机的主甲板或上层甲板，并将其作为乘客乘坐。 ISO 15845:2014的目的不是规定设备设计，而是定义最低功能和安全要求，并强调已知对国际机场环境中民用运输飞机的高效和安全运行至关重要的标准。 ISO 15845:2014规定了飞机和车辆制造商以及航空公司和机场当局认可的全球要求。此外，还应适当参考车辆运行所在国的国家政府法规。此类国家法规可适用的主要领域（但并非唯一领域）包括: ? 适用于道路车辆的一般要求，或类似的当地机场法规； ? 关于车辆设计、清洁、消毒和设备的卫生要求，可用于运送有或无医疗护理的患者； ? 适用于在提升位置承载人员的提升设备的安全要求。 但是，本国际标准中的任何内容均不得被视为取代任何当地适用的法律或法规，除非已为此目的从有关当局获得了特定豁免。关于适用于欧盟和欧洲自由贸易区的法律要求，见下文4.1.1的注释。 ISO 15845:2014假设残疾或丧失能力的乘客可以由至少一名乘务员陪同，并且可以坐在轮椅上或躺在担架推车上。 车辆设计中与安全相关的主要因素是心理方面的考虑，即幸福感和安全感，以及乘客的身体舒适度和避免恐慌。 ISO 15845:2014还假设可以使用任何类型的轮椅，例如带或不带乘员自我约束系统的标准型轮椅、不带扶手的飞机过道宽度轮椅、非乘员驱动轮椅、电池驱动轮椅等，或任何类型的担架运输车。 注:假设电池供电的轮椅不会被带入飞机客舱。 ISO 15845:2014不适用于其他形式的飞机装载设备，这些设备可以使用，但不是专门为残疾人士或残疾人登机而设计的，例如移动休息室、乘客登机桥或外部安装的吊舱，如用于医疗后送直升机的吊舱。 ISO 15845:2014不适用于批准用于公共车辆的未经修改的汽车零件，例如:。 g、 底盘，用于设计目的的登车时。 本国际标准的某些要求是由某些飞机类型的门的超负荷通道具体规定的，可能不适用于其他飞机类型。然而，本国际标准的目的是，任何能够到达超大容量飞机（VLCA）上层甲板的车辆应能够安全地处理这种特定情况。

ISO 15845:2014 specifies the minimum functional and safety requirements for enclosed self-propelled boarding vehicles designed for transporting and boarding/de-boarding persons with reduced mobility onto/from the main deck or upper deck of main line civil transport aircraft on which they are travelling as a passenger. The intent of ISO 15845:2014 is not to specify equipment design, but rather to define minimum functional and safety requirements and highlight those criteria which are known to be essential to an efficient and safe operation on civil transport aircraft in the environment of international airports. ISO 15845:2014 specifies the worldwide requirements recognized by aircraft and vehicle manufacturers as well as airlines and airport authorities. In addition, it shall be applied with due reference to the national governmental regulations of the country where the vehicle is to be operated. The main though not exclusive areas in which such national regulations can apply are: ? general requirements applicable to road vehicles, or similar local airport regulations; ? sanitary requirements regarding design, cleaning, disinfection and equipment of vehicles that can be used to carry diseased persons with or without medical attendance; ? safety requirements applicable to elevating equipment carrying persons in the elevated position. Nothing in this International Standard, however, shall be deemed to supersede any locally applicable law or regulation, unless a specific exemption has been obtained for this purpose from the appropriate Authority. See NOTE of 4.1.1 hereafter as regards legal requirements applicable in the European Union and EFTA. ISO 15845:2014 assumes that a disabled or incapacitated passenger can be accompanied by at least one attendant, and can be seated in a wheelchair or reclining on a stretcher trolley. Major factors in the design of the vehicle, with relevance to safety, are the consideration of psychological aspects, i.e. feelings of well-being and security, and the physical comfort of the passenger and the avoidance of panic. ISO 15845:2014 also assumes that any type of wheelchair, e.g. standard type with or without occupant self-restraint system, aircraft aisle width wheelchairs without armrests, non-occupant propelled wheelchairs, battery powered wheelchairs, etc., or any type of stretcher transport trolley, can be employed. NOTE It is assumed that battery powered wheelchairs will not be taken into the cabin of an aircraft. ISO 15845:2014 does not apply to other forms of aircraft loading equipment which can be used but is not specifically designed for boarding of incapacitated or disabled persons, e.g. mobile lounges, passenger boarding bridges, or externally mounted pods such as used on medical evacuation helicopters. ISO 15845:2014 does not apply to unmodified automotive parts approved for public vehicles, e.g. chassis, when used on a boarding vehicle for the purpose for which they were designed. Certain requirements of this International Standard are specifically dictated by overwing access to doors of certain aircraft types, and might not apply to other aircraft types. However, the intent of this International Standard is that any vehicle capable of reaching the upper deck of very large capacity aircraft (VLCA) shall be able to safely handle this specific situation.