The paper presents research on key aspects of project communication related to the basic areas of the construction project; goals, scope of work, costs, benefits of the project and connection with the development strategy of the environment in which the project is located. In addition to the theoretical part, a practical insight is given into the example of communication practice in construction projects in the Republic of Croatia on the application of the reconstruction of the Vinkovci-Vukovar railway. The paper consists of several parts. At the very beginning, there is an introduction to the work. Since effective project communication is based on key aspects related to construction project planning, the second point is the key aspect of project communication. Through this unit, the main concepts of project communication management are described, as well as key aspects of effective communication. The third part describes the problems of linking success and project communication by the direct reasons for project failure, as well as understanding the needs of stakeholders and the planning of communication in the project. In the next section, the competencies of the project manager for communication in construction projects are presented, the project manager is described there; as an individual in the organization, and his competencies, ie the skills needed for his job, and thus the very definition of competence. A comparison of IPMA and PMI competencies of the project manager for communication in projects is given, which explains IPMA's Oko competencies and PMI Talent Triangle® and the differences in approach to competencies between them. After that, the fifth part explains the development and progress in project management oriented to the successful connection of a successful project and project management. The sixth part states the development and adoption of a strategy for project communication management and stakeholders, which explains the management of project communication through inputs and outputs and the tools and techniques for effective project communication management. This is followed by a practical insight into the example of communication management on the Vinkovci-Vukovar railway reconstruction project, where the plan and strategy of the project itself and the exact communication management plan in the project are stated. At the very end is the conclusion of the paper.