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

  • Platooning with Ease on the I-70
    July 15, 2025
    What would happen to truck platooning - a nascent technology - if the weather turns nasty? The I-70 Truck Automation Corridor Project in the northern US should provide some answers, reports David Arminas…
  • Accurate vehicle detection with Radix wired sensors
    February 8, 2016
    Radix Traffic will be featuring at Intertraffic Amsterdam its wired magnetometer sensors, over 500 of which have been installed in the UK to provide accurate vehicle detection. Unlike conventional inductive loops, the sensors can be installed around 50cm below the road surface where they are protected from damage caused by bad weather and heavy traffic. Radix claims that once a sensor is installed it will continue to detect during its 15-year design life with no maintenance required. Radix says installat
  • IRD complements WIM with tyre under-inflation detection
    May 8, 2015
    To complement its existing WIM offering, IRD has introduced a system to detect under-inflated and flat tyres at highway speeds. Tyre inflation pressure has both safety and economic impacts for road users and none more so than with commercial vehicles. An underinflated tyre has decreased directional control, increased risk of catastrophic failure, and negatively impacts tyre life and fuel economy. In June 2014 the USDOT published Large Truck and Bus Crash Facts 2012 in which the Federal Motor Carrier Safety
  • Innovative traffic information system
    January 31, 2012
    From the roadside James Foster compiles some eye-catching news, deployments and product picks from the work zone