Skip to main content

Washington’s smarter traffic signals could ease commuter congestion

City officials in Washington, DC, are launching a two-year test of technology that they hope will ease traffic gridlock and improve public safety in the city. In 2013, they will begin connecting traffic signals to existing high-speed network cables that run beneath the city streets. Once connected to the network, the signals will be equipped with video cameras and wi-fi hot spots. The test program will cover traffic lights at 16 intersections. According to governing.com the DC metro area regularly turns up
November 14, 2012 Read time: 3 mins
City officials in Washington, DC, are launching a two-year test of technology that they hope will ease traffic gridlock and improve public safety in the city.

In 2013, they will begin connecting traffic signals to existing high-speed network cables that run beneath the city streets. Once connected to the network, the signals will be equipped with video cameras and wi-fi hot spots. The test program will cover traffic lights at 16 intersections.

According to %$Linker: 2 External <?xml version="1.0" encoding="utf-16"?><dictionary /> 0 0 0 oLinkExternal governing.com www.governing.com false http://www.governing.com/columns/tech-talk/col-taming-tough-commute.html false false%> the DC metro area regularly turns up on lists of the nation’s most congested cities. A study by Texas A&M University’s Texas Traffic Institute estimated that DC commuters spent 74 hours stuck in traffic in 2010, worse than New York, Chicago or Los Angeles.

Rob Mancini, chief technology officer for Washington, DC, thinks smart traffic management can shave off some of those hours spent commuting and improve public safety too.

The program will explore the feasibility of a number of potential improvements, Mancini says. For instance, the city will test whether power can be delivered to traffic signals through the communications network using a technique called power over Ethernet, which could keep traffic signals operating when traditional power lines are down. The city also will experiment with sending live traffic video to police officers and traffic management centres.

“When we have a problem at a particular intersection, we could use the camera and the wi-fi hot spot to send video to the nearest police cruiser and show them where we have an issue,” Mancini says. “Assuming we ultimately go beyond our 16 test blocks, this could mean a much more rapid response to traffic issues in the city.”

Besides improving the daily commute, broad deployment of smart traffic management technology could strengthen overall emergency response in the nation’s capital. When a relatively mild earthquake struck the area in 2011, thousands of office workers were evacuated from their buildings. When they attempted to head home, they jammed the streets and brought traffic to a standstill. The new system could give traffic managers much better information about conditions in the city and let them take control of traffic signals to speed future evacuations.

Mancini says the smart traffic experiment is possible because of Washington, DC’s commitment to building a high-speed information network that stretches throughout the city.  More than 350 miles of fibre optic cable has already been installed, and the city expects to complete an additional 170 miles of cabling by late next year.

“The sky’s the limit when you have this level of connectivity,” Mancini says.
Indeed, he envisions wi-fi hot spots at traffic intersections providing valuable services and applications to DC commuters while they wait for the lights to change. During emergencies, when cellular networks often become overloaded with callers, drivers stuck in traffic could still text a message home, Mancini says. In more routine situations, drivers could simply access free city apps that report traffic conditions and recommend alternative routes.

Related Content

  • US DOT to host connected vehicle sessions at World Congress
    August 11, 2014
    With the success of the US DOT’s Connected Vehicle Safety Pilot and the Department’s recent decision to pursue vehicle-to-vehicle technology in light vehicles, a transportation system of connected vehicles communicating with each other will soon be a part of the nation’s collective reality. Building on that momentum, the US DOT has plans for multiple regional pilot deployments of connected vehicle technology in real-world settings — bringing the promise of connected vehicles to some roads even sooner.
  • Cestel showcases non-invasive WIM solution for bridges
    March 21, 2018
    Cestel says its MkIII SiWIM technology turns any bridge into a fully automatic weigh-in-motion system without disturbing the road surface. Sensors are fixed to the underside of the bridge deck beneath up to four lanes of traffic and the system is calibrated with vehicles of known weight passing individually, in opposite directions and in various combinations depending on the road layout. Having been calibrated, an algorithm then interprets the information to determine the number, weights, speed and
  • TRL launches annual research review
    March 11, 2016
    The UK’s Transport Research Laboratory (TRL) has launched its annual research review 2014-2015, containing a summary of 18 months of research activity at TRL, along with expert commentary on connected and automated vehicles; electric vehicles; healthy transport; safety and smart infrastructure. It also looks at implications of healthy transport on road networks, infrastructure and planning as the government announces ‘healthy towns’ and provides insight on the future for self-driving cars and their safet
  • Appyparking exhibits platform to help drivers and cities
    March 19, 2018
    Appyparking is using Intertraffic to showcase a connected car platform that is said to bridge mapping, data, Internet of Things and payments drivers to provide users with more choice for destinations. The solution aims to save drivers time and money while also reducing congestion and pollution in cities. The product is part of the company’s ambition to create an urban transport application programming interface for kerbside navigation that can integrate into intelligent mobility applications which has