Modern transport systems are accelerating towards intelligent, networked and green solutions. New technologies such as Intelligent Transport Systems (ITS), fully automated operation (FAO) trains and vehicle-to-everything (V2X) communication have rendered the “nervous system” of transport networks – their communication and control systems – more complex and critical than ever before. These critical devices are extensively exposed to harsh outdoor conditions including vibration, extreme temperatures, dust, and electromagnetic interference. This demands military-grade requirements for the physical reliability, environmental adaptability, and maintenance-free capabilities of the infrastructure. Ensuring uninterrupted intelligent power supply and robust connectivity for these ‘mobile’ and ‘track-side’ critical loads forms the foundation for safeguarding public safety and travel efficiency.