Which traffic signal color indicates caution and potential danger?

The color that indicates caution and potential danger is amber. In traffic signal systems, amber light serves as a warning to drivers that they should prepare to stop, especially when the light is about to change to red. It is a signal to increase awareness of the surroundings and to slow down if it is safe to do so. The amber light can also indicate that there are potential hazards ahead, making it a critical message for drivers to heed to avoid accidents. Understanding this signal is essential for emergency response drivers who must navigate traffic carefully while responding to incidents.

The other options represent different messages: green indicates that it is safe to proceed, red signals that drivers must stop, and flashing yellow typically warns of hazards but may not require immediate stopping. Each of these signals plays a distinct role in traffic management, but amber specifically highlights the need for caution.