Intermodal Transport Control Systems (ITCS) are critical for managing dynamic public transport operations. Communication between drivers and dispatchers is essential, especially during disruptions caused by construction, accidents, or delays. Language barriers which nowadays become more and more relevant due to the shortage of domestic skilled workers and the influx of international staff, can elevate stress levels and hinder effective communication. Therefore, the aim of the presented exploratory study was to investigate the impact of communication barriers on the efficiency and workload of drivers and dispatchers. Overall, 36 participants participated in the experiment. Three language conditions (German, English, AI translation from English to German) and the presence or absence of background noise during radio communication were examined as independent variables. Furthermore, all participants completed tasks in both roles: (tram) driver and dispatcher. The findings highlight the significant influence of language barriers and noise on communication efficiency and workload. In summary, the results provide valuable insights to optimize ITCS user interfaces, especially in multilingual and high-stress environments.