## 5.2 Basis of the MEPRO Process Model The MEPRO process model is based on the "VDA Recommendation on Project Process Planning". In accordance with the VDA recommendation, the sequence of a vehicle project is structured into seven milestones (MS). The sequence between two milestones is called a process phase: MS A: Commission project, project inquiry (Begin Phase A-B) MS B: Approval of rough product/process design (Begin Phase B-C) MS C: Approval of detailed product design (Begin Phase C-D) MS D: Approval of detailed process planning (Begin Phase D-E) MS E: Approval to acquire production resources (Begin Phase E-F) MS F: Release to mass production (Begin Phase F-G) MS G: Project completion (Completion Phase F-G) In the VDA recommendation, task elements, which must be performed within the framework of a vehicle project, are defined and allocated to project phases: Concept development* Product design / verification* Planning / verification of the production process Product acceptance from the customer point of view* Acquisition of production resources Production * Task elements that the MEPRO perspective focuses on (refer to Figure 2)