The integration of components and functions into the vehicle appears too late - the overall experience suffers. Therefore, address important requirements early on.
First, consider ergonomics (usability, operability, feedback) as well as installation space in the vehicle. In addition, cluster systems by user motives and develop a mental model.
Use cases, motives from the framework, stories, knowledge about the complete vehicle and other systems.
In this early concept phase developers must clarify fundamental questions on usability and installation space. How is the system operated (instrument and operating concept)? How is the system arranged in the vehicle (visibility)? What feedback (signals) reaches the user? How much space is available for the system?
In order to reduce the perceived complexity for the user, orient functions on motives or needs and combine them across systems. Chose all appropriate systems and functions for a selected motive and combine them into one control element.
Another option for the conceptual integration is to link technical systems with the help of the corresponding stories. Combine these into a comprehensive story and design the technical combination of the systems and the respective interface element accordingly.
A highly simplified illustration of the system based on framework and story helps to communicate the integration concept. An appropriate metaphor illustrating the motive supports the observer when generating a correct idea and a mental model.
Integration concept, requirements on usability and packaging, easy to understand system graphics.
Sometimes, developers struggle while explaining the system to be developed and the customer benefit in a simple, precise and efficient manner. The reduced illustration using metaphors helps.
Sarodnick, F., & Brau, H. (2006). Methoden der Usability Evaluation. Verlag Hans Huber. Field, A. P., & Hole, G. (2003). How to design and report experiments (p. 153). London: Sage publications