Hungary's largest metropolis is set to join the ranks of hyper-connected cities, where mobility and municipal services are networked to self-optimize—all while staying resilient against evolving cyber threats.

The future of transport, especially urban mobility, lies not in siloed systems but in ubiquitous connectivity. Vehicles, EV charging networks, parking infrastructure, public transit, and traffic management are increasingly converging into a single, intelligent ecosystem. This hyper-connectivity goes beyond mere convenience; it fundamentally reshapes urban operations, sustainability, and security – noted Attila Romics, Information Security Consultant at 4iG IT, during the TRA conference.

Collaborative Mobility

Lest we think these are far-off visions of the distant future, the first signs are already visible in our daily lives. Modern navigation apps do more than just map routes; they integrate real-time traffic data and the live availability of EV charging stations. The ultimate goal is to move from reactive systems to predictive optimization: when congestion begins to form, the system should not only suggest alternatives but also adjust traffic light timings accordingly.
Energy efficiency remains a key driver of these innovations. According to Attila Romics, Information Security Consultant at 4iG IT, smart traffic lights, adaptive traffic control, and vehicle-to-infrastructure (V2I) communication can reduce fuel consumption by as much as 15-20%. A prime example is the partnership between Audi and Las Vegas, where in-car dashboards display countdowns to green lights and recommend the optimal speed to hit the "green wave" without stopping. The result? Faster commutes with a significantly lower environmental footprint.
Rio de Janeiro’s collaboration with Waze operates on a similar principle: user-reported incidents—such as accidents or potholes—are fed directly into the city’s operations center, allowing authorities to reroute traffic before gridlock sets in. Meanwhile, Volvo is advancing vehicle-to-vehicle (V2V) communication: if one car detects an icy road surface, it instantly alerts other connected vehicles in the vicinity.

The Digital Twin: Building a Virtual Replica of the City

Smart city frameworks have long evolved beyond mere traffic management. Today’s IoT ecosystems monitor everything from air quality and energy consumption to utility network capacities. Copenhagen serves as a benchmark, where networked street furniture and waste management systems optimize maintenance cycles in real-time. Resources are deployed only when and where necessary, shifting urban management from a fixed schedule to a demand-driven model.
The true paradigm shift, however, lies in autonomous decision-making powered by Digital Twin technology. By creating a high-fidelity virtual replica of the city, authorities can simulate the impact of infrastructure changes or emission fluctuations before a single stone is turned. This is already operational in Hungary on the M1-M7 motorway's Budaörs section. Looking ahead, these datasets will directly orchestrate autonomous fleets, including self-driving logistics and sanitation vehicles.
Underpinning this evolution is the low latency of 5G and ongoing 6G research, coupled with the rise of edge computing. By processing data locally at the device level rather than in distant data centers, we achieve the near-zero latency and enhanced reliability essential for autonomous mobility and critical urban infrastructure.

No Progress Without Trust and Security

However, this evolution introduces unprecedented risks, warns Attila Romics, Information Security Consultant at 4iG IT. Hyper-connectivity exponentially expands the attack surface: the more devices integrated into the network, the more potential entry points emerge for malicious actors. Scenarios involving manipulated traffic flows via spoofed alerts or the targeted disruption of critical urban infrastructure are already tangible threats today.   
Consequently, security cannot be a post-hoc consideration. Under the Zero Trust architecture, every system component undergoes continuous authentication; no element is inherently trusted. This is bolstered by AI-powered threat intelligence systems that analyze network traffic in real-time to neutralize anomalies instantly.   
The challenge is as much human as it is technological. Misconfigured devices, default passwords, and social engineering remain primary vulnerabilities. Furthermore, as automated systems grow in complexity, their operational transparency often decreases in inverse proportion—presenting new challenges for user trust.
Nevertheless, the trajectory is clear: urban operations and mobility are becoming fundamentally data-driven and interconnected. This shift creates significant market demand and synergies across transport infrastructure, construction, and the ICT sector. EU regulatory frameworks and support programs—such as the Cyber Resilience Act (CRA)—are specifically designed to ensure this digital transition is underpinned by systemic security.