ISO 16121-2:2011规定了驾驶员视野对车辆前方区域、驾驶员座椅对面入口和内部隔间的要求。 ISO 16121-2:2011适用于设计用于载客的低地板线路服务巴士中的驾驶员工作场所，除驾驶员座椅外，还包括八个以上的座椅，最大重量超过五公吨，总宽度超过2.30m。

ISO 16121-2:2011 specifies the requirements for the driver's field of view to the area in front of the vehicle, to the entrance opposite the driver's seat and the interior compartment. ISO 16121-2:2011 applies to the driver's workplace in low-floor line-service buses designed for the carriage of passengers, comprising more than eight seats in addition to the driver's seat, and having a maximum weight exceeding five metric tonnes and an overall width exceeding 2,30 m.