What cities have changed over from incandescent to LED signals?
A. Many cities have already fully upgraded from the traditional incandescent
signal to the LED signal. Among these cities are New York, Los Angeles,
Charlotte, St. Louis, Denver, Fort Collins and Evansville, Indiana. Many
other cities are currently in the process of upgrading.
Q. Why change over
the technology now?
A. The LED technology has the potential to save cities millions of dollars
over time. The much more energy efficient LED traffic signal lasts longer
and uses far less power than the traditional incandescent bulb.
Q. How is the public affected?
A. LED traffic signals have the potential to release economic strain away
from the city and potentially reduce taxes within the community. In addition,
the public will notice the LED traffic signal as being clearer, sharper,
and more distinct than the incandescent bulb. This will lead to a safer
Q. Why is the Notre Dame ILDEAS participating in promoting the LED technology?
A. This EPICS group is working to hasten the replacement of common incandescent
traffic signal lights with high-brightness light emitting diode (LED) technology.
We endeavor to educate authorities across the State of Indiana about the
significant benefits this technology provides in energy and maintenance
savings, pollution reduction and enhanced safety. Our overall goal is to
promote and realize the benefits engineering can provide to society through
outreach activities aimed at accelerating the adoption of this technology
Q. Who can I contact in my city or state if I want this to happen near my
A. To find out more about promoting the LED technology in your home city,
contact your local city engineer and ask him about the LED technology near