Below are some typical
examples of light pollution around town. (See more
examples of both good and bad lighting.)
The glare from unshielded field lights overwhelms the two
foreground road signs--"Stop" and "Cross Traffic Does Not
Stop." One of the most important reasons to eliminate glare is
to improve motorist and pedestrian safety.
Bright light from a parking lot extends well beyond the fenced
border into adjoining property. The light spilling over is also
called light trespass.
All of the gains made with attractive shielded
lights on the front facade of this shopping center are negated by the glare
from wall pack lights facing the side street.
Left: Light pollution from across the
region besmirches the night sky.
Right: Even during a midnight power outage with overcast skies and a new moon-- when the
sky should be
black-- light pollution from neighboring cities prevails.
Left: The local fire department has wall pack lights that pour
glare outward into adjacent homes and into the eyes of drivers along the
Right: Ironically, the only light not illuminated is the fully
shielded light near the road, seen in the upper left corner of the
Left: A residence is up-lighted on all sides, including
along the wooden fence.
Right: The flagpole and surrounding trees hint at the amount of light
lost upward into the sky, and there is not even a flag on the pole.
Flashy, blinking signage obstructs the view at an
intersection, distracts the attention of drivers, causes glare,
and detracts from the community appearance.
The loss of our night sky in less than a century and a half
is strikingly evident from these illustrations of the stars and the Milky
Way over London and over Paris. More at http://www.atlascoelestis.com/.