Car2X enabled visibility clothing with charger interface

The invention relates to a communication device (32) for a collision warning system for collision warning between a person inside the danger zone of the traffic flowing person (6, 7) and a participating in the flow of traffic vehicle (2), comprising - a communication interface (36) for forwarding a message (28) from which a risk of collision between the person (6, 7) and the vehicle (2) can be derived, from a message source (38) to a message sink (40) - an energy storage (48) for supplying electric power at least to the communication interface (36), and - an induction interface (50), which is designed to charge the energy storage (48) based on electromagnetic induction.