We have a beautiful night sky here in Toquerville Its one of the first things I noticed when I moved here from a big City. Due to citizen's initiative back in 2007 the City passed an ordinance setting parameters for exterior lighting that would help to preserve our view of the stars. That is now Chapter 18 of the Land Management Code Book found on this website under City Government.
Because it's expensive to change lighting systems, a concerned citizen gave the City Council information on a great new way for everyone to get involved that wouldn't require rewiring.
New light bulbs are available that can have features such as adjustable shielding for down-lighting. They can be incandescent or fluorescent.