{"ID":2875503,"CreatedAt":"2026-06-01T04:54:23.091178241Z","UpdatedAt":"2026-06-01T04:54:23.091178241Z","DeletedAt":null,"paper_url":"https://arxiv.org/abs/2509.02442","arxiv_id":"2509.02442","title":"Know What, Know Why: Semantic Hazard Communication for Intelligent V2X Systems","abstract":"In current vehicle-to-everything (V2X) communication systems, roadside units (RSUs) broadcast brief warning messages that alert nearby vehicles to avoid potential hazards. However, these messages lack contextual information on why a warning is issued, leading to excessive caution or inefficient driving behaviors. To avoid such a situation, we propose a semantic-enhanced and explainable V2X (SEE-V2X) system. In the proposed system, RSUs equipped with smart cameras detect obstructions and transmit context-aware messages to vehicles. By understanding both what the hazard is and why it occurs, drivers can make more intelligent decisions based on their specific driving situation. Furthermore, through a real-field demonstration, we show the new \"see-through\" feature in the proposed system, which enables drivers to visualize hidden pedestrians behind obstacles. We also perform simulations to compare traditional V2X with SEE-V2X under different traffic conditions. The results show that SEE-V2X significantly improves traffic efficiency and reduces unnecessary deceleration.","short_abstract":"In current vehicle-to-everything (V2X) communication systems, roadside units (RSUs) broadcast brief warning messages that alert nearby vehicles to avoid potential hazards. However, these messages lack contextual information on why a warning is issued, leading to excessive caution or inefficient driving behaviors. To av...","url_abs":"https://arxiv.org/abs/2509.02442","url_pdf":"https://arxiv.org/pdf/2509.02442v1","authors":"[\"Chen Sun\",\"Wenqi Zhang\",\"Bizhu Wang\",\"Xiaodong Xu\",\"Chau Yuen\",\"Yan Zhang\",\"Ping Zhang\"]","published":"2025-09-02T15:46:47Z","proceeding":"eess.SP","tasks":"[\"eess.SP\",\"cs.HC\"]","methods":"[]","has_code":false}