Microwave Vehicle Detection Technology (MVD) will alert motorists to backups
N.C. Department of Transportation will
begin installing an advanced warning system on the I-277 Outer Loop between
Tryon Street and I-77 in Charlotte from 7 a.m. to 6 p.m. on Sunday, Nov. 4,
system will detect traffic data like volume and speed, alerting motorists to
backups that frequently occur on the ramp from I-277 Outer to I-77 North.
Power Inc. of Mooresville was awarded the $188,000 project. Its crews will mill
and replace the existing pavement markings on the Outer Loop between Graham
Street and I-77 North, and will install the detection warning system,
consisting of two Microwave Vehicle Detection (MVD) units and two flashing LED
MVD units will collect traffic data and send it to a processor on site, where
it will be analyzed. The result will be a message to activate one or both of
the flashing beacons within the project location. Once traffic reaches speeds
below 20 miles an hour, the first beacon near the I-77 North exit ramp will
activate. If traffic continues to back up toward Tryon Street, the second beacon
will be activated. Additional signage warning motorists of slow or stopped
traffic will also be installed
contractor may close a lane on I-277 between 9 p.m. and 6 a.m. Monday through
Friday, and two lanes may be closed after 11 p.m. on those weeknights. Lane
closures are also possible on the weekends when traffic volumes will be
lighter. The completion date for the project is Dec. 4.
more information on the project, please contact the resident engineer at (704)
operates other detection systems on I-40 in Iredell County, I-26 in Polk and
Henderson counties and N.C. 58 in Carteret County.
reminds motorists to watch signs for construction information, stay alert and
obey the posted speed limit.
real-time travel information at any time, call 511, visit www.ncdot.gov/travel
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