Abstract
Operator’s field of view (FOV) is critical, as it directly impacts vehicle operations. However, there is a limited amount of relevant research in this area, especially in rolling stock industry. This paper details the validation process for cab design based on visibility requirements for subway and light rail operators in North America. The goal is to provide a reference for rail vehicle design and ensure a smooth design process, minimizing later adjustments. A 3D Human Mankin body model, based on body statistics from the 5th percentile of females and the 95th percentile of males in North America, was used for reliable validation. The model is placed into the vehicle context with structural parameters and then ergonomics is analyzed to determine the effects of various factors on the operator. Mockup cars were used for validation purposes and ergonomic validation was performed on them using real-size trackside markers and signal indications to maximize the simulation of a real operating environment. The cab design tested under these methods has been approved as meeting the project requirements. To further accommodate the special working conditions, cameras are added to optimize the design and thus expand the field of view. The validated cab design has now been put into production and broadly used in North American projects. The design parameters and validation methods stated in this paper are of significance to the field and can be used as a reference for North American cab design.
