Even an energy inefficient incandescent lamp is OK with this type of lighting, as they are so seldom on that little or no energy is wasted. Timer-controlled lighting . There are many applications where lighting is not needed all night, and this can save a great deal of energy. Some examples are advertising lighting, parking lot lighting, signs of all sorts, decorative lighting, and many others. In some applications, lighting that is still needed can be dimmed when the need for the lighting decreases.
Visibility can still remain excellent.
Glare-free lighting . Glare never helps visibility. The eye can see remarkably well even at very low lighting levels in the absence of glare. Naturally, these can help save energy when used in place of energy-inefficient lamps. Use them whenever possible.