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

  • Europe’s road safety record suffers as austerity bites hard, traffic police chiefs are told at TISPOL 2017
    March 7, 2018
    Europe’s leading traffic police chiefs are struggling with the challenge of how best to manage the region’s road network in an era of austerity. Things are changing fast, and not for the better, reports Geoff Hadwick. Europe’s road safety record is under threat. Police budgets are being slashed, staff numbers are falling and a long-term trend towards ever-fewer road deaths has ground to a halt. The line on the graph has flat-lined. Does Europe’s road network face a far more dangerous future? Lower and
    Read More
  • Europe’s road safety record suffers as austerity bites hard, say traffic police chiefs
    March 7, 2018
    Europe’s leading traffic police chiefs are struggling with the challenge of how best to manage the region’s road network in an era of austerity. Things are changing fast, and not for the better, reports Geoff Hadwick. Europe’s road safety record is under threat. Police budgets are being slashed, staff numbers are falling and a long-term trend towards ever-fewer road deaths has ground to a halt. The line on the graph has flat-lined. Does Europe’s road network face a far more dangerous future? Lower and
    Read More
  • Van driver banned for ignoring motorway incident road block
    October 18, 2018
    A van driver who ignored a Highways England road block on the UK’s M42 motorway has been banned from driving for six months. The case highlights the need for incident zone safety: the road block had been put in place by traffic officers following a fatal crash. Richard Leonard, head of road safety at Highways England, said: “We hope this case sends out an important message because those who ignore road closures put other people’s safety in jeopardy and this was clearly the case here for our traffic officers
    Read More
  • "AI can help fast-track Net Zero and Vision Zero," says VivaCity
    January 16, 2024
    Artificial intelligence isn't just about self-driving cars - and ‘smart’ doesn't always have to be shiny, new and innovative. Mark Nicholson, CEO at VivaCity, offers a few predictions for 2024...
    Read More

Highlighted Content