Skip to main content

NCDOT to install advance traffic warning system on I-277

The North Carolina Department of Transportation (NCDOT) is to install an advance warning system on the Interstate 277 (I-277) outer loop between Tryon Street and Interstate 77 in Charlotte, North Carolina. This system will detect traffic data such as volume and speed, alerting motorists to backups that frequently occur on the ramp from I-277 outer to I-77 north. The $188,000 project was awarded to Consolidated Power of Mooresville, who will install the detection warning system, consisting of two microwave
October 16, 2012 Read time: 2 mins
The 4775 North Carolina Department of Transportation (NCDOT) is to install an advance warning system on the Interstate 277 (I-277) outer loop between Tryon Street and Interstate 77 in Charlotte, North Carolina.

This system will detect traffic data such as volume and speed, alerting motorists to backups that frequently occur on the ramp from I-277 outer to I-77 north.

The $188,000 project was awarded to Consolidated Power of Mooresville, who will install the detection warning system, consisting of two microwave vehicle detection (MVD) units and two flashing LED beacons.  The MVD units will collect traffic data and send it to a processor on site for analysis; the system will then send a message to activate one or both of the flashing beacons.

Once traffic reaches speeds below 20 mph, 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. The contract also requires additional signage warning motorists of slow or stopped traffic.

NCDOT operates other similar detection systems on NC 58 in Carteret County, on I-26 in Polk and Henderson Counties, and on I-40 in Iredell County.

For more information on companies in this article

Related Content

  • TEXpress adds reversible managed lanes
    April 19, 2017
    Land availability restrictions and tidal traffic flows have led to the implementation of a novel managed lane configuration in Texas, as Colin Sowman finds out. Dealing with traffic congestion related to the ‘tidal flows’ caused by large numbers of commuters making their way into major business hubs in the morning and returning to the suburbs in the evening, has seen the widespread use of adaptive signal timing and even reversible lanes.
  • US states target wrong-way drivers
    February 25, 2014
    Two states in the US, Florida and New York are working to reduce the risk of accidents caused by wrong-way drivers. In Florida, a six-month study conducted by Dr Haitham Al-Deek of the University of Central Florida found that only 10 per cent of drivers who witness a wrong-way driver called the police. The study does show that the number of ticketed wrong-way drivers has increased since 2005 and so have the calls to 911 reporting those drivers. "I do believe they happen more than
  • ADOT advances wrong-way detection with US$3.7 million project
    June 14, 2017
    A US$3.7 million project by Arizona Department of Transportation (ADOT) to construct a thermal detection system to detect wrong-way vehicles and alert other drivers and law enforcement has been approved by the State Transportation Board. Once operational, the system will use thermal cameras, warning signs for wrong-way drivers and advisories for right-way drivers along a 15-mile stretch of I-17. In addition, the system will automatically focus highway cameras on the wrong-way vehicle and send automated aler
  • Speed limits: is 20 really plenty?
    June 16, 2020
    Speed kills – which means cutting speed should cut collisions. But is it that simple?