[iwar] [fc:Malfunctioning.computer.causes.traffic.signal.chaos]

From: Fred Cohen (fc@all.net)
Date: 2002-08-16 06:33:34


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Date: Fri, 16 Aug 2002 06:33:34 -0700 (PDT)
Subject: [iwar] [fc:Malfunctioning.computer.causes.traffic.signal.chaos]
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Malfunctioning computer causes traffic signal chaos 
Associated Press, 8/14/2002 http://www.boston.com/dailynews/226/region/Malfunctioning_computer_causes:.shtml

A malfunctioning clock in a computer that controls the city's traffic
lights caused several hours of traffic signal anarchy, leading to
widespread traffic jams Tuesday night and Wednesday morning. 
By 4 a.m. Wednesday most of the errant signals had been corrected, said
Tom Cocola, a spokesman for the New York City Department of
Transportation. 
''It was either a surge of electricity or a lack of electricity that
caused the clock in the computer to malfunction,'' Cocola said. 
There were no reported injuries during the traffic chaos, said police
spokesman Det. Robert Price, but police officers were kept busy
directing traffic throughout the city. 
Scattered traffic signals across the city went out of synchronization at
about 5:30 p.m., especially on the west side of Manhattan between 20th
and 90th streets. Some other parts of Manhattan and outer boroughs were
also affected. 
Drivers were stuck at red lights that never turned green, or would go
through a green light only to have the next one turn immediately red. 
The problems caused a breakdown in the flow of traffic snarling the
streets with honking taxis, trucks, buses and other commuters. 
There were no reported areas where drivers entering the same
intersection from different directions were all given green lights,
Cocola said. 
The clock malfunctioned at 5:30 p.m., but engineers at the computer
center, in Long Island City, Queens, waited until 8:30 p.m. after rush
hour was over to reboot the computer system, which apparently solved the
problem. 
Cocola said the problem was so severe that officials did not want to
make it worse by rebooting during rush hour, which may have caused other
difficulties.

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