Traffic Signals During Power Outages
Traffic Signals During Power Outages
(OP)
Hello,
What do other cities do, or what is the industry standard, for power supply to traffic lights during outages? Currently for us, we do not have an uninterrupted power supply or backup power supply to our lights, so they go dark during a power outage.
Our power outages don't usually last very long either.
Thanks in advance for your input.
What do other cities do, or what is the industry standard, for power supply to traffic lights during outages? Currently for us, we do not have an uninterrupted power supply or backup power supply to our lights, so they go dark during a power outage.
Our power outages don't usually last very long either.
Thanks in advance for your input.





RE: Traffic Signals During Power Outages
The closest major intersection to where I live is a four lane road intersecting with a six lane road.
I don't know the road classifications, but there is a lot of traffic.
Recently a transformer blew and the light was out. There was no backup power supply and traffic was backed up for miles.
On the other hand, they got it fixed within a couple of hours.
I am not aware of any traffic lights in the city with a backup power supply, as I have seen numerous lights out over the years.
RE: Traffic Signals During Power Outages
The proposed text reads:
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Rumor has it there will be an announcement on the next revision by the end of the year.
"...students of traffic are beginning to realize the false economy of mechanically controlled traffic, and hand work by trained officers will again prevail." - Wm. Phelps Eno, ca. 1928
"I'm searching for the questions, so my answers will make sense." - Stephen Brust
RE: Traffic Signals During Power Outages
RE: Traffic Signals During Power Outages
RE: Traffic Signals During Power Outages
How big is the battery backup that controls a simple intersection??? Or is the backup used to just flash the lights red?
CDG, Los Angeles Civil Engineering specializing in Hillside Grading
http://www.CivilDevelopmentGroup.com
RE: Traffic Signals During Power Outages
"...students of traffic are beginning to realize the false economy of mechanically controlled traffic, and hand work by trained officers will again prevail." - Wm. Phelps Eno, ca. 1928
"I'm searching for the questions, so my answers will make sense." - Stephen Brust