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

  • Developing ‘next generation’ traffic control centre technology
    July 4, 2012
    The Rijkswaterstaat and Highways Agency have joined forces to investigate what the market can do to realise an idealistic vision for traffic control centre technology. Jon Masters reports One particular seminar session of the Intertraffic show in Amsterdam in March was notably over subscribed. So heavy was the press to attend that your author, making his way over late from another appointment, could not get in and found himself craning over other heads locked outside to overhear what was being said. The
  • FTA calls for greater reliability on road network following improvements at Dartford
    October 14, 2015
    Drivers using the Dartford Crossing at peak times are saving around an hour and a half every week thanks to Dart Charge, according to Highways England. New figures released by Highways England show that journeys over the Dartford Crossing, which cost £62million (US$95 million) to convert to free-flow tolling, are up to 56 per cent faster than before payment barriers were removed. Drivers at peak times save up to 14 minutes southbound and seven minutes northbound.
  • Bitsensing makes modern history in fair Verona
    July 3, 2025
    Shakespeare’s Verona was a place of star-cross’d lovers – today, it’s the traffic which is more of a problem. Euichul Kim at Bitsensing takes up our story…
  • Øresund bridges the front line for border crossing traffic
    September 15, 2016
    Timothy Compston considers the challenges faced by the operators of the Øresund Bridge between Denmark and Sweden, the largest structure of its kind across Europe. In light of the concerns about the ongoing security threat and the unprecedented flow of migrants, many of the countries that make up the Schengen Area in Europe have re-introduced border controls. For its part, Sweden has rolled out ID checks for train, bus and ferry passengers from Denmark placing the landmark Øresund Bridge very much on the fr