Planning in road evacuation: classification of exogenous activities

Transportation planning concerns ordinary and emergency conditions. Emergency planning aims to reduce risk and relative components (occurrence; vulnerability; exposure). In this paper we consider internal transportation planning for a system in emergency conditions, with specific focus on the exposure component. One of the main macro-activities to reduce exposure is evacuation. Starting from an analysis of existing studies and best practices for classifying activities during evacuation and considering some limits of such classification, this paper uses a general classification of planning activities, with their specification for evacuation planning. Each activity is analysed in relation to strategies for transportation planning and the time reference scale (strategic, tactical, operative). A classification of transport vehicles supporting evacuation is reported.