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PIARC (World Road Association), founded in 1909 and comprising 125 member governments from all over the world, is the global forum for exchange of knowledge and experience on roads, road transport policies and practices. With consultative status to the Economic and Social Council of the United Nations, the Association is contributing to a stable and sustainable global development of the road and transport sector.

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  5. Technical Reports

Technical Reports Road tunnel operations

This page lists technical reports of PIARC in the field of Road tunnel operations. These publications are classified chronologically.

  • Systems and equipment for fire and smoke control in road tunnels

    This report complements the PIARC report published in 1999 "Fire and Smoke Control in Road Tunnels". After a presentation of the basic principles of smoke and heat progress at the beginning of a fire, the report presents the safety concepts for tunnel fires. It draws the lessons from the fires which occurred in the Mont-Blanc, Tauern and Saint-Gothard tunnels. The role of transverse and longitudinal ventilation is presented. The question of emergencies exits and escape route is addressed in detail, [...]

  • Traffic Incident Management Systems used in Road Tunnels

    This report mainly identifies incident detection and verification devices being used in tunnels to provide operators with the information required to implement response scenarios, devices and systems being used by operating agencies to respond to incidents, and communicate with motorists within the tunnel.

  • Road Tunnels: Vehicle Emissions and Air Demand for Ventilation

    In 1990 and 1995 PIARC published the calculation methodology and the emission factors for road tunnel ventilation design. An update of the existing PIARC methodology was necessary, as the emission standards of the vehicles were becoming more stringent and hence the vehicles cleaner. The old version described the emission situation up to the year 1995. This document has been produced by working group 2 of the PIARC Technical Committee on Road Tunnel Operations in the framework of its activities between [...]

  • Good Practice for the Operation and Maintenance of Road Tunnels

    This report complements the report entitled "Reduction of operational cost of road tunnels" which was presented and published at the Kuala Lumpur Congress in 1999. Various aspects of the management and operation of tunnels are considered. A method for providing continuity of management of safety, throughout the life of a tunnel, is described together with issues requiring consideration. The components and value of a Tunnel Management System (TMS) for the operation and maintenance of a tunnel are [...]

  • Cross Section Design of Bidirectional Road Tunnels

    Work on this report started in September 2001 as a continuation of the work carried out between the years 1998 and 2001, which concluded with the report entitled CROSS SECTION GEOMETRY IN UNIDIRECTIONAL ROAD TUNNELS, published by PIARC in March 2001. This report shares the terminology and general approach of the previous document but adapts and extends it to cover tunnels with a single gallery and two directions of travel. The drafting of this report has involved examination of appropriate national [...]