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There is a lack of early project control when automotive software is developed by external suppliers. This paper proposes a process improvement that targets early deliverables from suppliers as a means to improve project control. An addition to the existing automotive process employing a two-level use case approach is presented. In an example study involving Volvo 3P we show that the process improvements are applicable in real industrial development processes and that use cases are suitable for automotive requirements communication. The example also showed that use cases can be employed at the level of detail necessary to describe embedded systems. [ABSTRACT FROM AUTHOR]