Answer :
Final answer:
Most construction signs are diamond-shaped with an orange background, informing drivers of road work and related conditions. These differ from standardized NFPA 704 hazard signs, which communicate chemical hazards in workplaces and labs. Therefore the correct option is A
Explanation:
These signs are essential for the safety of drivers and construction workers alike, alerting drivers to various conditions such as road work ahead, detours, and other temporary road conditions resulting from construction activities. Unlike regulatory signs that mandate specific traffic behavior (like stop or yield), or warning signs that alert drivers to potential road hazards or changes in driving conditions (such as a bend, dip, or pedestrian crossing), construction signs are specifically used in areas where road work is being conducted.
In contrast to construction signs, NFPA 704 hazard signs (also known as fire diamonds or hazard diamonds) are used to provide a quick reference for the health, flammability, reactivity, and special hazards posed by chemicals in an emergency situation. These hazard signs are standardized by the Occupational Safety and Health Administration (OSHA) and are based on the Globally Harmonized System of Classification and Labeling of Chemicals (GHS) developed by the United Nations. NFPA 704 signs are typically not found in road construction areas but rather in laboratories and industrial settings where chemicals are stored and used.
