Editing Big Dig (section)

== Operations Control Center (OCC) ==
{{anchor|Operations Control Center (OCC)}}
{{expand section|date=April 2013}}

As part of the project, an elaborate Operations Control Center (OCC) [[control room]] was constructed in [[South Boston]]. Staffed on a "[[24/7/365]]" basis, this center monitors and reports on [[traffic congestion]], and responds to emergencies. Continuous [[video surveillance]] is provided by hundreds of cameras, and thousands of sensors monitor traffic speed and density, [[air quality]], water levels, temperatures, equipment status, and other conditions inside the tunnel. The OCC can activate [[Ventilation (firefighting)|emergency ventilation]] fans, change [[Variable-message sign|electronic display signs]], and dispatch service crews when necessary.<ref>{{cite journal|last=Johnson|first=Christine M.|author2=Edward L. Thomas|title=A Case Study Boston Central Artery/Tunnel Integrated Project Control System, Responding to incidents Rapidly and Effectively|journal=Metropolitan Transportation Management Center|date=October 1999|page=12|url=http://ntl.bts.gov/lib/jpodocs/repts_te/11063.pdf|access-date=April 4, 2014|url-status=live|archive-url=https://web.archive.org/web/20130309164537/http://ntl.bts.gov/lib/jpodocs/repts_te/11063.pdf|archive-date=March 9, 2013}}</ref><ref name=Rosenwald>{{cite web|last=Rosenwald|first=Mike|title=Fixing Boston's Horrible Jams|url=http://www.popsci.com/scitech/article/2003-09/fixing-bostons-horrible-jams|work=Popsci|date=September 4, 2003 |publisher=Popular Science|access-date=April 3, 2013|url-status=live|archive-url=https://web.archive.org/web/20130605101508/http://www.popsci.com/scitech/article/2003-09/fixing-bostons-horrible-jams|archive-date=June 5, 2013}}</ref><ref name=Lewis>{{cite news|last=Lewis|first=Raphael|title=The smart highway|url=http://cache.boston.com/traffic/bigdig/stories/032402_smart_highway.htm|access-date=April 3, 2013|newspaper=Boston Globe|date=March 24, 2002|url-status=live|archive-url=http://archive.wikiwix.com/cache/20130403123608/http://cache.boston.com/traffic/bigdig/stories/032402_smart_highway.htm|archive-date=April 3, 2013}}</ref>