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

  • May 31, 2013
    Connected cones make for safer sites
    David Crawford welcomes new lives for old road safety products. Traffic cones and barrels have traditionally been on the bottom shelf of the road construction and maintenance industry, typically forming visible soft safety barriers for temporary works at a lower cost than concrete alternatives. On both sides of the Atlantic, however, they are fast gaining new roles as instrumented components in advanced construction safety arrays. The EC-sponsored €1 million (US$1.31 million) Safelane collaborative innovati
  • November 30, 2018
    London comes first for public transport but suffers from congested roads, says Here Technologies
    London has the best public transport system in the world - but the UK capital’s roads are among the most congested, says a new report. Here Technologies’ Urban Mobility Index ranked transit efficiency in 38 cities based on their public transport frequency, density and coverage as well as how public transport performs against car speed. Just behind London are Zurich, Toronto, Washington, DC and Stockholm. However, London was ranked 34th for congestion. The top five least-congested cities are: H
  • March 26, 2014
    Citilog and Signal Group sign strategic alliance
    France’s Citilog and Signal Group of the US yesterday signed a ‘strategic alliance’ to combine their technologies, with the aim of delivering advanced ITS video analytics solutions to the North American market. Citilog will combine its capabilities in video analytics with Signal Group’s expertise in traffic controllers, with the first product designed to reduce traffic waiting times at intersections through the integration of real-time queue length calculation into adaptive intersection control.
  • August 2, 2018
    UK government gets future mobility challenge underway
    The UK government has unveiled plans under its Future of Mobility Grand Challenge which could change how people, goods and services move around the country. These initiatives have been outlined in the Last Mile and Future of mobility call for evidence, which provide an insight into how technology could make transport safer, more accessible and greener. Under the plans, electric cargo bikes, vans, quadricycles and micro vehicles could replace vans in UK cities as part of a strategy to change last-mile