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

  • Agencies in pursuit of high-speed WIM accuracy
    April 20, 2017
    Alan Dron looks at where WIM is heading in the near future. As Weigh-In-Motion (WIM) systems grow in sophistication and accuracy, they are increasingly being used in more active roles to help ensure road safety through enforcement action against overweight vehicles.
  • Wireless traffic detection system from Siemens offers an alternative
    November 7, 2012
    Siemens WiMag wireless traffic detection, which is an alternative to conventional loop and radar traffic detection systems, uses magnetic disturbances to detect vehicles and low power wireless technology to transmit data to host controllers. The company says WiMag can offer a more flexible solution than traditional loop detectors, particularly where detection is required at significant distances from the traffic controller. Battery-powered, wirelessly linked and smaller in size than traditional loop detecto
  • A journey into the Dilemma Zone with Econolite
    January 16, 2025
    Indecision on the road can kill. Econolite’s Sunny Chakravarty and Vincent Mayeda present new data-driven dilemma zone and intersection safety strategies for a Vision Zero future
  • US to field trial connected vehicle technology
    April 17, 2012
    The US Department of Transportation (DOT) has announced that the University of Michigan will conduct a road safety field trial in Ann Arbor, Michigan, which will include the installation of wireless devices in up to 3,000 vehicles in one location, to evaluate the effectiveness of connected vehicle technology to prevent crashes.