Which type of lighting installation is allowed in playing and spectator seating areas of indoor sports facilities?

In indoor sports facilities, especially in areas designated for playing and spectator seating, the safety and durability of lighting installations are of utmost importance. The use of protected lamps with glass or plastic lenses is essential because these types of lamps are designed to withstand potential impacts and prevent breakage that could lead to injury.

Using protected lamps ensures that, in the event a lamp is struck or falls, the risk of sharp glass or other hazardous debris is minimized. This safety consideration is critical in environments where there is a lot of movement and activity, such as sports courts or gymnasiums.

While the other choices suggest various lamp types, they do not have the same level of protective features that are necessary for such a dynamic environment. For instance, allowing any type of lamp or restricting the installation to only incandescent or fluorescent lamps does not address the essential aspect of safety and protection against breakage in high-traffic areas. Therefore, the requirement for protected lamps is aligned with safety guidelines essential for keeping both players and spectators secure in an indoor sports setting.