“Guide for Application of Knowledge Graphs for Rail Transit,” designated by the Project Number P2807.9, is a groundbreaking standard that has significantly impacted the rail transit industry. By providing a comprehensive framework for the development and implementation of Knowledge Graphs (KG), specifically tailored for the rail transit sector, referred to as rail-transit-oriented KG (RTKG), this guide addresses the critical need for consistent knowledge patterns and unified interface standards. The lack of these standards has long posed significant challenges for different rail transit enterprises looking to exchange and integrate knowledge effectively. As shown in Figure 1, the RTKG framework outlined in the guide discusses data and pattern requirements, the RTKG construction process, RTKG integration, performance evaluation, and various application scenarios. Institutions and enterprises engaged in developing KG in the rail transit sector can now follow a general implementation method, ensuring compatibility and interoperability. Additionally, the guide supports suppliers in providing compatible KG under a unified knowledge model and interface specifications, as shown in Figure 2. Through this guide, individual KG can be easily and efficiently combined and integrated to form a more complete and accurate knowledge service ecosystem for the rail transit industry. The development and implementation of an RTKG in the rail transit industry is a complex and multi-faceted endeavor that requires significant contributions from various stakeholders. Individual contributions play a crucial role in ensuring the success and effectiveness of such initiatives. Experts, researchers, industry professionals, and data scientists all bring unique insights and expertise to the table, which are essential for creating a comprehensive and accurate RTKG. In addition to individual contributions, there is also a need for input from different sources such as historical data, real-time operational data, maintenance records, and safety reports. This diverse range of data sources provides raw material needed to construct a robust and reliable RTKG. Furthermore, collaboration between institutions and enterprises is vital for sharing knowledge, best practices, and technological advancements. By working together, these entities can overcome the challenges associated with inconsistent knowledge patterns and unified interface standards, ultimately leading to the creation of a more cohesive and interoperable RTKG ecosystem. Importance of Involvement Participating in standardization activities related to this standard offers significant advantages for both professionals and their organizations. For individuals, involvement provides a platform to share knowledge, gain insights from peers, and foster professional growth and development. This engagement enhances credibility and visibility within the industry, potentially leading to new career opportunities. On an organizational level, active participation helps shape industry standards that drive innovation, improve efficiency, and ensure compliance with regulatory requirements. It also enables companies to influence future trends and technologies, positioning them at the forefront of the industry. Professionals have multiple avenues to contribute to the development of this standard. They can join our IEEE Computer Society Knowledge Engineering Standards Committee, and particularly the Knowledge Graph Working Group for Rail Transit, where they can directly influence the creation and revision of the guide. These committees often seek experts from diverse fields, providing an opportunity for cross-disciplinary collaboration. Attending conferences, seminars, and workshops related to the guide offers a chance to learn about ongoing projects and network with other stakeholders. Professionals can also participate in public consultations and provide feedback on proposed standards, ensuring their perspectives are considered. Publishing research papers or whitepapers on relevant topics can help shape the technical foundation of the guide. Current Programs and Initiatives The IEEE Computer Society Knowledge Engineering Standards Committee is actively engaged in various programs and initiatives related to standards development related to knowledge graphs. This project aims to establish a Knowledge Graph standard for the rail transit industry, addressing challenges associated with inconsistent knowledge patterns and interface standards. Recent updates on this P2807.9 project include the successful organization of three meetings. These meetings have resulted in the establishment of a dedicated working group (Knowledge Graph Working Group for Rail Transit), confirmation of the working group’s charter, and multiple rounds of modifications and confirmations of the P2807.9 standard outline. The project is currently in the drafting stage of version D1.0, which will further refine the standard’s specifications to ensure its practicality and forward-looking nature. We encourage readers to participate in these ongoing programs and initiatives. Your involvement not only contributes to the growth and advancement of computer science but also provides valuable opportunities to enhance your professional skills, expand your network, and make a meaningful impact on the industry. For more information on how to get involved, please visit the official IEEE website or send an email to [email protected] to express your interest and ask about the joining process. By joining these programs and events, you can help shape the future of computer science and technology, driving innovation and fostering collaboration across the global community. Conclusion The development of the IEEE P2807.9 standard is crucial for overcoming existing barriers related to inconsistent knowledge patterns and unified interface standards. This standard aims to facilitate seamless knowledge exchange and integration among different rail transit enterprises, thereby fostering a more cohesive KG ecosystem. For those interested in contributing to the IEEE P2807.9 standard, you can find more information on the official website or send an email to [email protected] to express your interest and ask about the joining process.