What is the minimum size requirement for "No Smoking" signs?

The correct answer indicates that the minimum size requirement for "No Smoking" signs is 10 inches by 14 inches. This standard size is often specified to ensure that the signs are clearly visible and legible from a distance, thus effectively conveying the message to avoid smoking in designated areas. Proper visibility is key in environments where safety is a concern, particularly around flammable materials such as those associated with LPG or CNG usage.

Using a size smaller than this could compromise the sign's ability to alert individuals adequately, potentially increasing the risk of accidents in areas where smoking is prohibited due to fire hazards. This aligns with safety regulations aimed at minimizing fire risks in facilities that handle combustible materials.