A method and system for communication in a real-time kinematic positioning system by paging. The active layer includes two different fullerenes. This construction helps to alleviate the neutralization among the generated ions themselves, thus to effectively release both positive and negative ions, and thereby to enhance the ion generation efficiency. The linear prisms are disposed along at least one of the linear base edges of the three lateral triangular sides. The dual display visually provides the vehicle heading and the external temperature through the reflective device.