Effective and fast responsive incident management systems (IMS) are essential in growing urban city environments where everyday challenges (traffic accidents, public safety, etc.) are present. These systems depend strongly on fast and reliable information exchange between different stakeholders, and the development and deployment of communication architecture is necessary. Integration and usage of advanced information and communication technologies (ICT) and concepts such as IoT, cooperative approach, and mobile data transfer play a crucial role in enhancing the efficiency and effectiveness of incident management systems. This paper focuses on the communication architecture based on the European intelligent transport systems (ITS) architecture emphasizing IMS within smart city environments. Highlighting the key components and challenges of developing a robust communication architecture, capable of managing incidents in real-time, the advanced IMS structure is presented, which enables the successful management of incidents minimizing their impact on everyday smart city operations.