1. Scope of application

1.1 Risk parameters

• The risk factors are :

  • vehicles and their loads ;

  • infrastructure features;

  • the operator's ability to use the equipment provided;

  • the behavior of users themselves.

• The consequences of risk-generating events such as breakdowns, incidents, accidents and fires are exacerbated by the confined nature of the tunnel. Most fires are caused by the spontaneous ignition of vehicles following a technical fault. However, all the rare fires that have resulted in fatalities have been the result of an accident, with the exception of the fire...