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

  • May 31, 2013
    Temporary traffic monitoring with Bluetooth and wi-fi
    David Crawford reviews developments in temporary ITS. Widespread take-up of technologies such as Bluetooth and wi-fi are encouraging the emergence of more sophisticated, while still cost effective, ITS responses to the traffic issues posed by temporary road situations such as work zones and special events. Andy Graham of traffic solutions specialists White Willow Consulting says: “A machine-to-machine radio link is far easier and cheaper than reading characters on a plate.” There can be other plusses. Tech
  • March 16, 2015
    Report analyses multiple ITS projects to highlight cost and benefits
    Every year in America cost benefit analysis is carried out on dozens of ITS installations and pilot studies and the findings, along with the lessons learned, are entered into the Department of Transportation’s (USDOT’s) web-based ITS Knowledge Resources database. This database holds more than 1,600 reports and periodically the USDOT reviews the material on file to draw conclusions from this wider body of evidence. It has just published one such review ITS Benefits, Costs, and Lessons Learned: 2014 Update Re
  • February 25, 2016
    Technology targets Red-X transgressors
    Currently deployed technology is being used to detect motorists ignoring the ‘red-X’ signs that indicate the lane is closed, as Colin Sowman hears. With an increasing network of ‘Smart Motorways’ - all-lane running or the opening of hard shoulders during times of congestion - Highways England (HE) has identified a growing problem with ‘red-X’ compliance. The ‘red-X’ sign signifies a closed lane or lanes and used to provide a safer area for stranded motorists, emergency workers or road maintenance crews and
  • October 22, 2014
    Smoothing the path to reducing traffic pollution
    David Crawford reviews a new approach to traffic smoothing. A key objective for the Californian city of Bakersfield’s upgraded traffic operations centre (TOC), which opened in June 2014, is to help improve living conditions in a region with one of the worst air quality problems in the US. The TOC is speeding up the smoothing of traffic flows by delivering faster and better-informed traffic signal retiming and synchronisation.