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

  • IRD scoops Hawaii traffic data collection award
    July 1, 2013
    International Road Dynamics (IRD) is to supply the Hawaii Department of Transportation (HDOT) with its continuous traffic monitoring (CTM) data collection systems in a contract worth around US$5.4 million. CTM systems collect traffic volume, speed, vehicle classification, and weight data to support HDOT’s continuous traffic monitoring program on the state’s highways. The contract covers the supply, operation and maintenance of the CTM systems, together with data services that include the provision for real-
  • McCain wins California DMS tech award
    June 4, 2021
    Company is long-term supplier of dynamic message signs to Caltrans
  • How digital navigation is key to managing congestion
    March 24, 2023
    Satnav – not costly civil engineering projects – might point us towards better management of congested road networks, argues David Metz of University College London
  • SESA supports MassDOT travel time network
    April 6, 2016
    SES America (SESA) has designed, engineered and manufactured over three hundred solar-powered embedded dynamic message signs (DMS) to be installed as part of the Massachusetts Department of Transportation’s (MassDOT)‘Go Time’ project. According to SESA, once completed, the project will provide the largest travel time network available in any state in the US, allowing motorists across the country to instantly access travel time data on major corridors across the region. Each site consists of static sig