What type of doors has glazing that is considered a hazardous location?

Glazing in doors is considered hazardous when it poses a risk of injury due to its location and the potential for breakage. Operable doors, which include swinging, sliding, and folding types, are often used in high-traffic areas where they are regularly pushed or pulled open and closed. The presence of glazing in these doors increases the likelihood of accidental impact, which could result in breakage and injury.

In contrast, fixed doors do not have the same potential to be impacted or jostled frequently since they remain stationary. While single and double-hinged doors may also have glazed elements, the key factor that makes operable doors particularly hazardous is their interaction and exposure to users. Thus, the correct answer highlights the significant safety considerations regarding glazed surfaces in operable doors, reinforcing the importance of proper safety measures and materials in their design.