Skip to main content

Canadian city pilots technology to improve traffic flow, safety

The City of Edmonton, Canada is piloting new traffic technology to help drivers get where they need to faster, easier and more safely, with the help of the University of Alberta's Centre for Smart Transportation. The city is testing an Advisory Driving Speed system on one of the city’s major freeway where the legal speed limit is 80 km/h and which experiences congestion issues during peak periods. Signage informs drivers of the recommended speed they should travel to avoid traffic jams and sudden stops,
August 21, 2015 Read time: 2 mins
The City of Edmonton, Canada is piloting new traffic technology to help drivers get where they need to faster, easier and more safely, with the help of the University of Alberta's Centre for Smart Transportation.

The city is testing an Advisory Driving Speed system on one of the city’s major freeway where the legal speed limit is 80 km/h and which experiences congestion issues during peak periods. Signage informs drivers of the recommended speed they should travel to avoid traffic jams and sudden stops, optimising travel time.

The recommended driving speed is calculated using vehicle volume and speed data, gathered by sensors buried under the roadway and ramps. The data are processed through a complex algorithm developed by the centre. The calculation for recommended speed is then programmed and posted on digital signs controlled from the city’s Traffic Management Centre.

Similar technology has reduced collisions and congestion in France, Sweden and the United States. Once the pilot is complete, the city will review the results and evaluate the potential of using the technology as a permanent solution to traffic issues.

“This is an exciting opportunity for our research group to work with the city and tackle the problem of traffic congestion and improving public safety,” said civil engineering professor Tony Qiu, director of the centre in the Department of Civil and Environmental Engineering.

“Other cities have successfully installed advisory speed signs to manage congestion and reduce stop-and-go traffic, and we hope to achieve these benefits in Edmonton as well.”

Qiu says planning for the pilot project began the week he arrived at the U of A six years ago. He says he found a group of like-minded individuals when he met with city transportation officials.

“The recommended speed will change according to issues such as heavy volume, construction, collisions and weather conditions,” said Wai Cheung, technical specialist in advanced traffic analysis with the city’s transportation operations. “If drivers match the recommended speed, even if it’s only 10 km/h slower, they will help reduce congestion and possibly collisions.”

Related Content

  • Inrix informs FHWA’s data improvements
    December 19, 2017
    Refinements in the data available from the US Federal Highway Administration will improve road management across America. David Crawford reports. In August 2017, the US Federal Highway Administration (FHWA) issued the first results from an upgraded version of its National Performance Management Research Data Set (NPMRDS). Developed to identify the locations and times of high congestion affecting traffic flows along America’s 259,000km (161,000 mile) national highway system, this is a key resource for sta
  • USDoT pilots show win-win potential for connected vehicles
    December 19, 2017
    Pete Goldin discovers the state of play with connected vehicles trials in the US and the impact of Hurricane Irma on Tampa’s pilot. The US Department of Transportation’s (USDoT’s) connected vehicle (CV) pilot sites have moved into phase 2 of the deployment programme– design, build, test and, maybe most importantly, collaborate.
  • Are truck bans the wrong move in the battle for air quality
    June 29, 2016
    Low emission zones and heavy goods vehicles’ access to city centres may at first glance appear attractive but how effective are such controls? Jon Masters reviews emerging trends across Europe. Around 1,700 European cities have implemented low emission zones (LEZs) and in addition some have restricted city centre access for heavy goods vehicles (HGVs). Even those that restrict HGV access, such as Paris and Rome, allow exemptions at certain times and for particular classes of vehicle. But with what effect?
  • Traffic lights: There’s a better way ..
    July 9, 2014
    .. say researchers at Massachusetts Institute of Technology (MIT) who have developed a means of computing optimal timings for city stoplights that they say can significantly reduce drivers’ average travel times. Existing software for timing traffic signals has several limitations, says Carolina Osorio, an assistant professor of civil and environmental engineering at MIT and lead author of a forthcoming paper in the journal Transportation Science that describes the new system, based on a study of traffic