In-vehicle communication refers to the systems and technologies that allow communication between a vehicle and its occupants, as well as between vehicles. This includes features like Bluetooth connectivity for hands-free phone calls, GPS navigation systems that provide real-time traffic updates, and vehicle-to-vehicle (V2V) communication that helps prevent accidents by sharing information about road conditions and hazards. These communication systems enhance safety and convenience for drivers and passengers. For example, smartphone integration allows users to access apps and music directly through the vehicle's interface, while emergency response systems can automatically alert authorities in case of an accident, ensuring timely assistance.