Following the success of the 1st PIARC International Conference on Tunnels held in Lyon, France, in October 2018, PIARC and the Spanish National Committee (ATC) will jointly organize the 2nd International Conference on Tunnels and the VIII National Symposium on Tunnels in October 2022 in Granada, Spain. This joint event will bring together the knowledge and exchange of international experiences of PIARC in this matter together with the traditional Spanish symposium organized by the ATC every four years. We hope to bring together nearly 1,000 road tunnel professionals from the world to generate a global discussion on the topic.

PIARC is an apolitical and non-profit association, one of whose main objectives is the transmission of knowledge and the exchange of experiences on roads. Its Work Programs are organized in four-year cycles marked by the World Road Congresses. The framework for the development of these objectives is the Technical Committees, being that of Road Tunnels, previously called Tunnel Operation, one of the most active. Since 1995 he has published 48 documents in addition to an online Manual and numerous articles in the Routes / Roads magazine. For this reason, in October 2018 the initiative was taken to organize an international Conference on Tunnels that was held in Lyon and which was a great success of participation. This has encouraged the convening of a 2nd Conference, this time in Spain, which will mean its consolidation.

Faced with the new challenges of climate change, a sustainable economy and within the framework of Covid 19, it makes sense to speak of resilient infrastructures, a concept also applicable to tunnels. In this way, tunnels must present high availability rates with an acceptable level of safety even under circumstances that involve significant alterations to normal operation, establishing measures to reduce impacts. This will also imply the redefinition of the design and management standards and integrate the concept of resilience into the life cycle.

On the other hand, the road transport sector is experiencing a technological revolution with the challenges of digital transformation. Phenomena such as the autonomous vehicle, shared vehicles, digital mobility platforms, electrification, and the new energies for propulsion of vehicles are realities on which we must already work due to their direct relationship in the way of management and operation of tunnels. The ITS systems and their continuous development also have a lot to say about all these issues. Other important issues are the management of large urban tunnels, as well as, in general, the ventilation and lighting of the tunnels and their constant progress.

The celebration of this 2nd international conference, coinciding with the VIII National Symposium of Tunnels of Spain, will allow to expose the state of the art of all these novel topics and be a forum for feedback and exchange of ideas that will allow to continue investigating modelling the tunnels facing the challenges that in a few years will be present and will be normal in our infrastructures.


Resilience in road tunnels​

Resilience, to analyse how the tunnels remain available with an acceptable level of security under various circumstances, particularly when the normal situation is interrupted.

Management of urban and high traffic road tunnels​

Management of urban tunnels with a high level of traffic and its impact on improving the operation, maintenance and management of traffic in this type of infrastructure.

ITS systems and their contribution to improved operations

ITS systems and their contribution to the improvement of the operation through the application of new technologies that will in turn allow an improvement in safety.

New vehicle propulsion energies and their impact on tunnels

New propulsion energies and their impact on safety. The management systems will change with the use of alternative energies and the types of accidents that may occur in the tunnels will give rise to different consequences than the current ones.

Risk Analysis

Risk Analysis. The important experiences that have already been acquired in the application of these methodologies, both in the project of new tunnels and in the rehabilitation of existing ones, allow us to analyse different case studies.

Ventilation and Lighting

Ventilation and Lighting. Although they are recurring themes, it is intended to address energy efficiency, optimization of algorithms, impact on the environment and improvement in the control of this type of facilities.

Emergency management

Emergency management. It is also a recurring theme but always necessary for the exchange of experiences in all relief operations in the event of unwanted events and assistance with evacuation.

Adaptation to the regulations

Adaptation to the regulations presenting the state of the art in the different countries of adaptation of their tunnels to the regulations in force at the present time.


Calle 30 tunnels in Madrid or to the A-7 tunnels between Almeria and Malaga

A technical visit, for which you should indicate your choice at the time of registration on the Conference website.

KEY Dates

  • 1st March 2021 - Call for papers
  • 18th July 2021 - Limit for abstracts submission
  • 5th October 2021 - Acceptance of papers
  • 22th May 2022 - Deadline for reception of papers
  • 20th June 2022 - Acceptance of papers
  • 22th August 2022 - Final program

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