# Automated Evaluation of C-ITS Message Content for Enhanced Compliance and Reliability  
[PERSON]  
1 Faculty of Transportation Sciences, Czech Technical University in Prague, 110 00 Prague, Czech Republic; [EMAIL_ADDRESS] (Z.L. ): [EMAIL_ADDRESS] (R.H.); [EMAIL_ADDRESS] (M.S. ): [EMAIL_ADDRESS] (M.Z.) [PERSON]  
1 Faculty of Transportation Sciences, Czech Technical University in Prague, 110 00 Prague, Czech Republic; [EMAIL_ADDRESS] (Z.L. ): [EMAIL_ADDRESS] (R.H.); [EMAIL_ADDRESS] (M.S. ): [EMAIL_ADDRESS] (M.Z.) [PERSON]  
1 Faculty of Transportation Sciences, Czech Technical University in Prague, 110 00 Prague, Czech Republic; [EMAIL_ADDRESS] (Z.L. ): [EMAIL_ADDRESS] (R.H.); [EMAIL_ADDRESS] (M.S. ): [EMAIL_ADDRESS] (M.Z.) [PERSON]  
1 Faculty of Transportation Sciences, Czech Technical University in Prague, 110 00 Prague, Czech Republic; [EMAIL_ADDRESS] (Z.L. ): [EMAIL_ADDRESS] (R.H.); [EMAIL_ADDRESS] (M.S. ): [EMAIL_ADDRESS] (M.Z.) [PERSON]  
1 Faculty of Transportation Sciences, Czech Technical University in Prague, 110 00 Prague, Czech Republic; [EMAIL_ADDRESS] (Z.L. ): [EMAIL_ADDRESS] (R.H.); [EMAIL_ADDRESS] (M.S. ): [EMAIL_ADDRESS] (M.Z.) [PERSON]  
2 Department of Electronic Engineering, National Taipei University of Technology, Taipei  
safety, information exchange, or traffic optimization, and their correct functioning is critical for ensuring the overall interoperability of the system [4; 5]. The primary goal of this paper is to address one of these key challenges: the automated evaluation of C-ITS message content. By using tools such as Karlos and C-ITS SIM, this work aims to enhance the reliability of the message validation processes, providing detailed laboratory testing and rigorous data analysis. This approach will not only ensure that the messages comply with standards but also help identify gaps and potential improvements in message content structure, thereby contributing to the overall effectiveness of C-ITSs. This state-of-the-art review examines various studies related to V2X communication and C-ITS systems, emphasizing their contributions to the field and identifying gaps in the current literature. Several studies have extensively explored the technical metrics associated with V2X communication. For instance, [PERSON] et al. [6] conducted a comparative analysis between field measurements and vehicle-in-the-loop testing, focusing on critical parameters such as received signal strength and packet error rates. Similarly, [PERSON] [7] investigated the effects of multipath propagation on vehicle-to-infrastructure (V2I) and vehicle-to-vehicle (V2V) communications, proposing various test scenarios that could influence signal strength. [PERSON] et al. [8] contributed to this field by testing LTE and DSRC communication, examining parameters like delay and packet loss while adopting a pedestrian perspective. Experimental scenarios were conducted in diverse environments, including a campus, an urban street, and a suburban neighborhood, highlighting the applicability of cooperative systems in varied contexts. Additionally, [PERSON] et al. [9] focused on the adjacent channel interference effect, which can pose challenges for ensuring successful communication, particularly when multiple services are utilized simultaneously. [PERSON] et al. [10] also explored the impact of transmission range in V2X communication, utilizing their custom-developed Arrada LocoMate OBU transmission system to evaluate the packet loss ratio parameter concerning modulation and traffic density. [PERSON] et al. [11] presented the results of field tests of a DSRC-based V2X communication system, analyzing key performance indicators such as packet error and reception rate, received channel power indicator, and inter-packet gap across three different signal strength modes: 5, 11, and 20 dBm. In addition, [PERSON] et al. [12] conducted further tests on communication within cooperative systems, proposing a testing procedure that includes field tests with a focus on the packet delivery time parameter and its dependency on the number of vehicles.