Intelligent Infrastructure - Roadway Operations & Maintenance - Work Zone Management http://www.itsoverview.its.dot.gov/ROM.asp ITS Benefits >> A variable speed limit system used to regulate traffic flow through work zones on a 7.5 mile section of I-495 saved motorists approximately 267 vehicle-hours of delay each day.01/02/2013 01:52:54 PMhttp://www.itsbenefits.its.dot.gov/ITS/benecost.nsf/SummID/B2011-00765?OpenDocument&Query=HomeITS Costs >> The Virginia DOT implemented and operated a variable speed limit (VSL) system for two years on a 7.5 mile section of I-495 for $3.2 million (2008).12/07/2012 05:11:07 PMhttp://www.itscosts.its.dot.gov/ITS/benecost.nsf/SummID/SC2012-00271?OpenDocument&Query=HomeITS Lessons >> Ensure proper placement of variable speed limit (VSL) signs in a work zone and operate the VSL system consistently on a long term basis.11/16/2011 12:51:37 PMhttp://www.itslessons.its.dot.gov/its/benecost.nsf/ID/90B73D4F926CE2F08525793D0012224A?OpenDocument&Query=HomeITS Benefits >> License plate recognition system successful in monitoring travel times, leading to reduced congestion in work zone.08/31/2010 04:12:19 PMhttp://www.itsbenefits.its.dot.gov/its/benecost.nsf/SummID/B2010-00641?OpenDocument&Query=HomeITS Lessons >> Maintain ownership of the work zone ITS system and monitor vendor's work diligently to assure proper system operation.08/13/2009 12:00:50 PMhttp://www.itslessons.its.dot.gov/its/benecost.nsf/Lesson?OpenForm&AF0EC6AB3F4E2AB98525760E004AA07C^HomeITS Lessons >> Coordinate the schedules for ITS deployment and roadway construction to maximize use and benefits of the system.08/13/2009 12:00:49 PMhttp://www.itslessons.its.dot.gov/its/benecost.nsf/Lesson?OpenForm&B8E6987878E4CFF38525760800517AB0^HomeITS Benefits >> In Little Rock Arkansas, 82 percent of the drivers surveyed agreed that the Automated Work Zone Information System improved their ability to react to slow or stopped traffic.07/31/2009 11:41:04 AMhttp://www.itsbenefits.its.dot.gov/its/benecost.nsf/SummID/B2009-00606?OpenDocument&Query=HomeITS Benefits >> In Kalamazoo Michigan, the activation of the Dynamic Lane Merge System in a work zone reduced the number of forced merges seven fold and reduced the number of dangerous merges three fold.07/30/2009 03:30:51 PMhttp://www.itsbenefits.its.dot.gov/its/benecost.nsf/SummID/B2009-00605?OpenDocument&Query=HomeITS Benefits >> In Texas, during major incidents or high construction impact periods, the work zone traffic management system diverted an average of 10 percent of mainline traffic to alternate routes, with the highest diversion of traffic at 28 percent.07/30/2009 03:30:44 PMhttp://www.itsbenefits.its.dot.gov/its/benecost.nsf/SummID/B2009-00604?OpenDocument&Query=HomeITS Benefits >> In Washington DC an ITS work zone program implemented on I-295 decreased delay up to 90 percent with an average decrease in delay of 52 percent when drivers were advised to take alternate routes.07/30/2009 03:30:42 PMhttp://www.itsbenefits.its.dot.gov/its/benecost.nsf/SummID/B2009-00600?OpenDocument&Query=HomeITS Lessons >> Use dynamic lane merge systems to improve operations in long term construction zones.06/18/2009 01:47:42 PMhttp://www.itslessons.its.dot.gov/its/benecost.nsf/Lesson?OpenForm&9032535605767080852575CB006F8EC5^HomeITS Costs >> A modeling study evaluated the potential deployment of full ITS capabilities in Cincinnati. The annualized life-cycle cost was estimated at $98.2 million.09/17/2008 03:34:03 PMhttp://www.itscosts.its.dot.gov/its/benecost.nsf/SummID/SC2008-00164?OpenDocument&Query=HomeITS Benefits >> In North Carolina, a survey of local residents near the Smart Work Zone systems found that over 95 percent of motorists surveyed would support use of these systems in the future.04/29/2008 10:46:48 AMhttp://www.itsbenefits.its.dot.gov/its/benecost.nsf/SummID/B2008-00533?OpenDocument&Query=HomeITS Benefits >> In North Carolina, Smart Work Zone systems increased alternate route usage by 10 to 15 percent when specific delay and alternate route information was posted on roadside dynamic message signs.04/29/2008 10:46:27 AMhttp://www.itsbenefits.its.dot.gov/its/benecost.nsf/SummID/B2008-00532?OpenDocument&Query=HomeITS Lessons >> Consider changeable message sign (CMS) positioning, data archive requirements, and traffic demand when considering deployment of a dynamic late merge system.02/26/2008 12:28:34 PMhttp://www.itslessons.its.dot.gov/its/benecost.nsf/Lesson?OpenForm&48A36B69D2B6FC6B852573E30061CAA6^HomeITS Costs >> Illinois DOT implements work zone ITS on the I-64 Add-lane Construction project at a cost of $435,000.06/22/2007 02:26:30 PMhttp://www.itscosts.its.dot.gov/its/benecost.nsf/0/DAD03F2A5F203F228525730200634079?OpenDocument&Query=HomeITS Benefits >> Work zone construction staff in North Carolina observed a dramatic reduction in queue frequency and length with use of smart work zone traveler information system.03/30/2007 01:02:19 PMhttp://www.itsbenefits.its.dot.gov/its/benecost.nsf/0/21AADDD19A082069852572600073D030 ITS Benefits >> Ninety-seven percent of the motoring public found predicted travel time information useful when posted at an I-75 work zone near Dayton, Ohio.03/30/2007 10:33:33 AMhttp://www.itsbenefits.its.dot.gov/its/benecost.nsf/0/1ED443F7C9575DBC852572600066ECD5 ITS Benefits >> Automated work zone information near Los Angeles effective in diverting traffic to alternate routes during congested periods03/29/2007 10:11:29 AMhttp://www.itsbenefits.its.dot.gov/its/benecost.nsf/0/A70ADBCAC89456AE85257260006E4D77 ITS Benefits >> 85% of I-95 travelers at a North Carolina work zone changed routes at least once in response to work zone delay messages, greater than 65% sometimes or often changed routes.03/21/2007 10:41:24 AMhttp://www.itsbenefits.its.dot.gov/its/benecost.nsf/0/FC47E6A8BE1A031B852572600069B4FE ITS Benefits >> In Minnesota work zones, a portable traffic management system improved safety by slowing approaching vehicles by 9 mi/hr, reduced speed variability 70 percent.03/16/2007 12:35:57 PMhttp://www.itsbenefits.its.dot.gov/its/benecost.nsf/0/ACCC9254FAD906A885257260006FB216 ITS Benefits >> Speed display trailers can reduce average vehicle speeds by 5 mi/hr and decrease the number of vehicles traveling at excessive speeds in rural work zones.03/14/2007 10:13:09 AMhttp://www.itsbenefits.its.dot.gov/its/benecost.nsf/0/F61943DF4661F59E85257260007508B4 ITS Benefits >> Dynamic Late Merge System reduces confusion and aggressive driving, decreases queue lengths, and reduces congestion during lane closures in the Minneapolis/St. Paul metropolitan area.03/12/2007 10:51:45 AMhttp://www.itsbenefits.its.dot.gov/its/benecost.nsf/0/B706D19649FE2EDC852572600059EBF0 ITS Benefits >> An Automated Workzone Information System (AWIS) deployed near Los Angeles, California, reduced freeway delay by 46 percent.03/12/2007 08:56:34 AMhttp://www.itsbenefits.its.dot.gov/its/benecost.nsf/0/F090809C3D57058A85257260007450BCITS Benefits >> Speed monitoring displays reduced the number of speeding two-axle vehicles at a South Dakota work zone by as much as 25 percent,40 percent for larger vehicles.03/05/2007 03:05:53 PMhttp://www.itsbenefits.its.dot.gov/its/benecost.nsf/0/8F2306948210535B8525726000748E72