Korean Driver's License Practice Test

The color typically used for warning signs is yellow. This color is chosen because it is bright and attention-grabbing, effectively alerting drivers to potential hazards or changes in road conditions. Yellow is associated with caution, and its visibility helps ensure that drivers notice the signs ahead of time, allowing them to react appropriately. For instance, warning signs might indicate curves, intersections, pedestrian crossings, or other conditions that require reduced speed or increased alertness. In contrast, blue is commonly used for informational signs, green indicates direction or guide signs, and red is generally reserved for stop signs or prohibitory signs that signal to drivers to take immediate action, such as stopping. Thus, the use of yellow for warning signs is a standardized practice aimed at enhancing road safety.