A co-driver is a person who assists the main driver in navigating and managing the vehicle during a journey. This role is especially important in competitive settings, such as rally racing, where the co-driver reads maps and provides directions to help the driver maintain speed and stay on course. Their communication is crucial for safety and performance. In everyday situations, a co-driver can also be a friend or family member who helps with tasks like adjusting the GPS or keeping the driver alert. This teamwork makes long trips more enjoyable and can enhance safety on the road by sharing responsibilities.