Driving the Future of Public Transport in Erfurt:
How TASSTA and Trapeze Modernized EVAG’s Communications
Revolutionizing Communication and Operations for a Smarter City
In Erfurt, Germany, the Erfurter Verkehrsbetriebe AG (EVAG), the city’s public transport operator responsible for managing Erfurt’s tram and bus networks, is continuing its journey toward a smarter, safer, and more connected public transport system. Together with TASSTA and long-term partner Trapeze, EVAG is modernizing the communication infrastructure and on-board systems across its tram fleet — transforming both daily operations and the passenger experience through state-of-the-art technology.
The Challenge: Aging Systems in a Fast-Moving World
Public transportation today demands fast, reliable communication and seamless data integration — not just for operational efficiency, but also for delivering clear, real-time information to passengers. EVAG recognized that its legacy communication and on-board computing systems were no longer fit to support the mobility needs of a growing and increasingly digital city like Erfurt.
The existing VoIP communication system was outdated and lacked the flexibility, scalability, and security required for modern urban transit operations. At the same time, the on-board computing systems needed significant upgrades to handle today’s data-driven demands and to lay the groundwork for future innovations like AI-powered traffic management.
The Solution: A Joint Effort for Modernization
To address these challenges, EVAG entrusted Trapeze and TASSTA to lead the modernization effort. The project focused on two key pillars: advanced communication technology and next-generation on-board computing.
At the heart of the upgrade is Trapeze’s IDR-f3 on-board computer. With enhanced processing power and integrated 5G connectivity, the IDR-f3 enables faster, more reliable data communication and offers robust support for future technologies. Its hybrid architecture — combining traditional radio systems with modern mobile networks — ensures stable connections, even in complex operational environments.
Complementing this is TASSTA’s cutting-edge MCPTT solution, which replaces EVAG’s previous VoIP solution. TASSTA’s platform delivers secure, instant communication over public mobile networks, while seamlessly integrating with mobile apps, intercom devices, and a robust backend infrastructure. This ensures that tram drivers and control centers can communicate efficiently and reliably at all times.
Together, these solutions form the foundation for a future-ready Intelligent Transport Control System (ITCS) — enabling real-time data exchange, better decision-making, and improved operational oversight.
The Results: Smarter Operations, Safer Communication, Better Service
Thanks to the collaboration between TASSTA, Trapeze, and EVAG, Erfurt’s public transport network has been significantly enhanced — with benefits felt by both staff and passengers.
Operational Benefits:
Operational Benefits:
- Reliable, secure voice communication through TASSTA’s Push-to-Talk over Cellular (PoC)
- Seamless integration of mobile devices for operational flexibility
- Enhanced system stability through hybrid radio/mobile networks
- Improved data analytics through AI and Business Intelligence interfaces
- Real-time passenger counting and service tracking
Passenger Experience Enhancements:
- Real-time departure countdown displays on trams
- More accurate passenger information
- Enhanced service reliability and transparency
This modernization not only improves EVAG’s current operations but also positions the organization for future innovations like V2X (Vehicle-to-Everything) traffic management and other smart city solutions.
Looking Ahead: Shaping the Future of Urban Mobility
The success of this project reaffirms EVAG’s commitment to digital transformation and sustainable urban mobility. TASSTA and Trapeze are proud to support EVAG as it continues shaping Erfurt into a model for smart, connected cities — where public transport is more efficient, safer, and more passenger-friendly.
Together, we’re not just modernizing technology — we’re building the future of mobility.
Together, we’re not just modernizing technology — we’re building the future of mobility.
