Switzerland expands flexible speed limits

The Swiss department for roads, Astra, is to expand its flexible speed limit systems. It already runs flexible speed limits on the approach to the Baregg tunnel and on the Zurich western bypass, but it is planning to expand this to include whole routes, such as the motorway between Zurich and Bern or Geneva and Lausanne.
June 19, 2013 Read time: 1 min

The Swiss department for roads, Astra, is to expand its flexible speed limit systems. It already runs flexible speed limits on the approach to the Baregg tunnel and on the Zurich western bypass, but it is planning to expand this to include whole routes, such as the motorway between Zurich and Bern or Geneva and Lausanne.

The system uses sensors which measure the volume of traffic, and if the number of cars reaches a certain level, the system can either lower the speed limit itself automatically or alert a traffic control centre.

Astra emphasised that it was important that this took place before the volume of traffic leads to a traffic jam. The capacity of the roads is the greatest when cars travel at a constant speed of 85 km/h. Astra is also using other congestion reduction measures, such as using the hard shoulder as an additional lane, and banning lorries from overtaking in certain areas.

Urban Traffic Control

Related Content

  • UK to trial truck platooning by the end of 2018
    August 25, 2017
    The first truck platooning trials on UK roads are planned to take place by the end of 2018, Transport Minister Paul Maynard has said. Announcing the US$10 million (£8.1million) government funding for trials today, Maynard said advances such as lorry platooning could benefit businesses through cheaper fuel bills and other road users thanks to lower emissions and less congestion. The platooning trials will see up to three heavy goods vehicles, travelling in convoy, with acceleration and braking controlled by
    Read More
  • PTV simulates York’s future
    August 26, 2021
    PTV’s predictive software modelling is helping one of England’s historic cities to improve traffic flow
    Read More
  • ITS European Congress: safer and cleaner mobility
    August 6, 2019
    Smart mobility and the increasing digitalisation of transport were among the main themes of this year’s ITS European Congress in the Netherlands. Ben Spencer picks some highlights from conference sessions which considered possible future developments Navigating between the Evoluon conference centre - a former science museum that resembles a giant-sized UFO - and an automotive campus, there was a lot to see at the 13th ITS European Congress in Brainport, Eindhoven. Organised by Ertico – ITS Europe and th
    Read More
  • Videalert provides full time enforcement with part time workload
    March 19, 2014
    Videalert says its algorithms on automated enforcement can reduce the workload on staff while providing an effective deterrent to offenders. Colin Sowman reports. While members of the public may believe that the enforcement of parking regulations, bus lanes and box junctions has no practical benefit and is purely a money-making operation, for many authorities the opposite is true. Enforcement is a loss-making but vital exercise as illegally parked vehicles create obstructions and dangers leading to gridl
    Read More

Highlighted Content