Skip to main content

New Zealand’s smart motorway opens

Commuters heading north on Wellington’s urban motorway will now get a smoother trip as the new lane is fully opened and New Zealand’s first smart motorway is turned on in the northbound direction. Using variable speed limits, which will be adjusted in real time in response to changing traffic conditions, the smart motorway will pace vehicles to smooth the traffic flow. Officials say this will result in safer journeys with more predictable travel times. It will also free up nearby roads for better public
July 15, 2016 Read time: 2 mins
Commuters heading north on Wellington’s urban motorway will now get a smoother trip as the new lane is fully opened and New Zealand’s first smart motorway is turned on in the northbound direction.

Using variable speed limits, which will be adjusted in real time in response to changing traffic conditions, the smart motorway will pace vehicles to smooth the traffic flow. Officials say this will result in safer journeys with more predictable travel times. It will also free up nearby roads for better public transport trips and for pedestrians and cyclists.

There are two types of signage on the motorway – variable message signs display information and messages, while lane control signs show either the speed limit or an X if the lane is closed.

Detectors and radars count vehicles and measure their speed. The smart system calculates the rate at which the road is getting congested, factors in what is likely to happen based on traffic records that are continually updated and monitored, and then adjusts the speed limit to pace the traffic and delay queues being formed.

The smart motorway reduces congestion by smoothing the traffic flow and maximising the number of vehicles that get through. As traffic builds, the system lowers the speed limit which allows vehicles to travel closer to each other, meaning more vehicles can fit on the road at any one time.

Related Content

  • Report analyses multiple ITS projects to highlight cost and benefits
    March 16, 2015
    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
  • Dynniq tests virtual tool for air quality evaluation and monitoring
    June 23, 2016
    An air quality evaluation system that utilises existing data has been modelled on the UK’s motorways and tested in Manchester as Peter Kirby and Paul Grayston describe. It has long been known that emissions from road transport are the principal source of NO2 pollution, especially in the urban environment, and that appropriate transport management can play a big role in meeting environment and public health objectives.
  • Hong Kong's integrated traffic management system
    May 22, 2012
    Hong Kong’s Route 8 now features an extensive and advanced traffic control and surveillance system developed to overcome challenges of great scale and complexity, write Delcan vice president Rex Lee and MD Joseph Lam
  • HERMES Study provides guidance for forward ITS thinking in Finland
    August 25, 2016
    Having authored HERMES, a major study for the Finnish Ministry of Transport and Communication, Josef Czako talks to ITS International about his findings and lessons for other authorities. When CEOs of major automakers are predicting more change in the next five years than in the past 50, what is the role of national authorities considering the benefits of innovations in ITS?