[Context and motivation] The automotive industry is currently undergoing a fundamental transformation towards software defined vehicles. The automotive market of the future demands a higher level of automation, electrification of the power train, and individually configurable comfort functions. [Question/problem] These demands pose a challenge to the automotive development cycle, because they introduce complexity by larger and not yet well explored design spaces that are difficult to manage. [Principal ideas/results] To cope with these challenges, the main players along the value chain have an increased interest in collaborating and aligning their development efforts along joint roadmaps. Roadmap development can be viewed as a field of requirements engineering with the goal to capture product aspects on an appropriate level of abstraction to speed up investment decisions, reduce communication overhead and parallelize development activities, while complying with competition laws. [Contribution] In this paper, we present a refinement of the "Innovation Modeling Grid" (IMoG), which encompasses a methodology, a process and a proposed notation to support joint analysis of development roadmaps. IMoG is focused on the automotive domain, yet there are clear potentials for other applications.

翻译：[背景与动机] 汽车行业正经历着向软件定义汽车的根本性转型。未来汽车市场要求更高程度的自动化、动力总成电气化以及可个性化配置的舒适功能。[问题与挑战] 这些需求对汽车开发周期构成了挑战，因为更大且尚未充分探索的设计空间增加了复杂性，使其难以管理。[主要思想与成果] 为应对这些挑战，价值链上的主要参与者越来越倾向于通过联合路线图来协作并协调开发工作。路线图开发可被视为需求工程领域的一个分支，其目标是在适当的抽象层级上捕捉产品特征，以加速投资决策、降低沟通开销、并行化开发活动，同时遵守竞争法规。[贡献] 本文提出了"创新建模网格"（IMoG）的改进版本，包含一套方法论、流程及建议符号体系，旨在支持开发路线图的联合分析。IMoG聚焦于汽车领域，但也具有拓展至其他应用的明确潜力。