What type of traffic sign indicates a warning?

Triangular signs are designed to indicate warnings to drivers. This shape is universally recognized as a signal for caution, helping to alert drivers to potential hazards or changes in the road situation. For instance, a triangular warning sign might indicate that there is a dangerous bend ahead, pedestrian crossing, or roadworks. The use of a triangle is effective because its shape draws attention and its color, typically red and white, enhances visibility and communicates urgency.

In contrast, rectangular signs often provide information such as regulations or directions, square signs can sometimes indicate information or guidance but are not specifically for warnings, and circular signs typically denote regulations, such as speed limits or prohibitions. The shape and design of traffic signs are established to ensure that drivers can quickly recognize and respond to different types of information on the road. Hence, triangular signs are specifically crafted to deliver warning messages effectively.