Which of the following would not be a function of radiological signs?

The function of radiological signs is primarily focused on conveying information related to radiological hazards, such as the presence of radiation and the levels of exposure. These signs are specifically designed to communicate critical information regarding radiation dose rates, contaminated areas, and directions for emergency responders in a radiological context.

B, which states that radiological signs would warn of chemical hazards, is not accurate because radiological signs do not pertain to chemical hazards. Instead, they are specifically geared towards radiological threats and do not provide information about chemical contamination or hazards.

In contrast, the other options highlight appropriate functions of radiological signs. For instance, they do provide dose rate information, indicating the level of radiation in a given area, and they can mark contaminated zones, helping to limit exposure to harmful radiation. They also serve to guide emergency responders in their actions and decisions during a radiological incident, ensuring safety and effective response.