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

  • South Korea goes for smart road tech
    October 31, 2019
    Advanced technologies will be incorporated into future road developments in South Korea as part of a 10-year programme. The country will incorporate smart road technology into expressway routes, with charging systems for EVs as they are being driven - as well as tech to remove dust and other contaminants. The country’s expressways will be ready for use by self-driving cars by 2024 and over 100 projects have already been planned, authorities say. Improving safety will be another focus for the smart ro
    Read More
  • Progress on speeding ‘may be hampered by confusion on 20mph limits’
    July 5, 2017
    The percentages of vehicles exceeding the speed limit in free flow conditions on UK roads have declined slightly for most vehicle and road types between 2011 and 2016, according to statistics published by the Department for Transport.
    Read More
  • Boost to infrastructure, autonomous cars in UK budget
    March 17, 2016
    The UK chancellor announced in his spring budget what he called the biggest investment, US$87.5 billion (£61 billion), in transport infrastructure in generations and is increasing capital investment in the transport network by 50 per cent over this Parliament compared to the last. The government plans to establish the UK as a global centre for excellence in connected and autonomous vehicles by establishing a US$24.1 million (£15 million) ‘connected corridor’ from London to Dover to enable vehicles to com
    Read More
  • Hurdles to MaaS adoption highlighted
    January 25, 2018
    Jack Opiola talks to some MaaS advocates in the US. Cities will accommodate almost 60% of the world’s population by 2025 and technology is outpacing transportation plans and planners - putting extreme pressures upon planners and transportation systems alike. Big data, digital payments, ubiquitous communications, smartphone applications, on-demand travel and autonomous vehicles are all shredding existing transport plans. Never before has the pace of population growth and the tools to address this problem
    Read More

Highlighted Content