RJT> I've also noticed that more and more vehicles,  particularly on trucks,  are
   > using LED taillights.  I guess when a bulb burns out they just
replace it with
   > an LED unit and don't have to worry about it for quite some time after that. 
   > I'm a bit surprised at how far it's gone,  though.

Most of the incandescent traffic lights around here have been phased out 
and replaced by LED's over the last few years. They actually look 
noticeably brighter, though I suspect that may have more to do with 
aiming more of their light in a useful direction than actually emitting 
more light. The city's web site says these cost more initially, but 
recover the cost fairly quickly in reduced power consumption and less 
frequent lamp replacement. I suppose that the cost of replacing 
conventional bulbs might be pretty significant on that scale when you 
account for paid labor, purchase and maintenance of city vehicles, etc. 

Costs less. Works better. What a deal.


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