The term CAR SIGNAL can be broken down into two crossword solutions: HORN (4 letters) and SIGNAL (7 letters). A car HORN is a device used to alert other drivers or pedestrians of the presence of a vehicle. It is usually operated by pressing a button on the steering wheel or dashboard. The sound of a car HORN is typically loud and distinctive, making it an effective way to communicate with other drivers. A SIGNAL is a visual or audible indication that conveys information or instructions. In the context of cars, signals are typically used to indicate when a driver is turning, stopping, or changing lanes.