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This paper argues that a logical specification of the timing behavior, which represents the core abstraction of the Timing Definition Language (TDL), is the key to significantly reduce the development, maintenance and integration costs of FlexRay-based systems. We measured a productivity gain by a factor of 20 and more with TDL compared to state-of-the-art FlexRay development methods and tools (see Section 1). We illustrate how TDL allows the platform-independent modeling of the timing and functional behavior, and how we accomplish the automatic platform mapping. An outlook sketches future research activities.