In 2009, T-Systems embarked on a transformative journey establishing a cutting-edge computer-controlled operations control system. This comprehensive solution featured a TETRA digital radio system and seamlessly integrated the vehicle fleet, laying the foundation for continuous expansion and digitalisation. Notably, passenger communication was elevated with dynamic stop displays, monitors, and real-time information accessible via web and mobile apps. T-Systems meticulously selected hardware and software components, equipped stops with dynamic passenger information, and ensured real-time data availability. The project also encompassed the set-up, optimisation, and integration of a digital TETRA trunked radio system, ensuring operational reliability and connection protection. The result is a stable, modern, and scalable solution, offered comprehensively by T-Systems, simplifying transfers, and bolstering transport control for public transport companies.