Abstract: Systems and methods for traffic signal warning are provided. An example system allows using a camera mounted in front of a vehicle to continuously scan a space in front of the vehicle to detect impending traffic signals and show them on a display disposed at a back of the vehicle to inform other trailing vehicles about traffic conditions in front of the vehicle. The system may allow a driver of a trailing vehicle, for example, to see which traffic light is going to turn at the present moment, or whether there is a speed limitation on the upcoming road segment. The detected traffic signals may be displayed in several different ways, such as actual or simulated images, icons, a text, or a video, which are updated at predetermined intervals. Additionally, the system may comprise speakers to audibly communicate information about traffic conditions.