As a result, emergency department traffic increased.
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The signal preemption idea was born in the early 1970s, when 3M devised a system that let emergency vehicles change traffic signals with pulses of strobe lights (later, infrared light) transmitted to receivers mounted over roadways.
Since launching about a year ago, the company has partnered with the University of Maryland to simulate emergency responses to traffic accidents, and the U.S. Army has begun using its software to train soldiers in responding to improvised explosive devices, a common threat in Iraq.
But people who listen to pirate radio tend not to be concerned about the problem - which can also affect radio communications by emergency services and air traffic control.
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Retained Fire-fighters respond to emergency incidents including fires, road traffic collisions and other specialist service calls such as chemical spills, collapsed buildings and other types of rescues.
In 1979 3M revamped its technology--sold under the Opticom brand--to allow it to recognize two different priority levels: a high level for emergency vehicles, which could force traffic lights to change immediately and a lower level for transit vehicles, which could hold off changing the light entirely if changing the light to green would snarl traffic.
"We are introducing CCTV cameras to monitor traffic and we will have emergency refuges if people break down, " he said.
He sees the potential for Watson cousins customized with analytics for traffic-pattern optimization and emergency planning devoid of the emotions that bedevil mere people.
The city's international airport was also closed to flights at one point, and staff began building a temporary control tower, as air traffic facilities were switched to emergency power sources.
They are uniquely qualified for jobs as pilots, mechanics, air traffic controllers, commercial drivers and emergency medical technicians because many of them have performed these roles in combat.
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She said she has called out the National Guard, the Oklahoma Highway Patrol and the state Office of Emergency Management to "try to get the traffic moving" and get people to shelter.
Features like social media services, live traffic and weather updates and automatic emergency calling will be available in 650 percent more cars worldwide in 2017 than there were in 2010, according to analysts at IMS Research.
We also intend to mitigate the impact of binational disasters on communities by establishing procedures to manage land and maritime traffic in the event of a border area emergency, and enhance our collective preparedness for security threats of all types -- health, chemical, biological, radiological, nuclear, and explosive.
Pilots are required to fly under the direction of air traffic controllers but federal regulations allow for some deviation in emergency situations.
"Regulating parking is essential to keep traffic flowing, pedestrians and motorists safe, roads clear for emergency services and business deliveries, deterring drivers from blocking roads and pavements, and ensuring people can park near their homes or local shops, " said Tony Ball, vice-chairman of the LGA's economy and transport board.
Dedicated lanes give buses an uncongested path, and traffic-signal priority gives buses the power, once reserved for emergency vehicles, to switch signals from red to green as they approach.
Race director Mike Turtur said an emergency meeting would take place to find out why Cavendish and other riders had to negotiate through traffic to finish the stage.
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