Evacuation system for planning escape routes in a building, having a model module which provides a model of the building, having an event module which provides at least one escape event in the building, wherein the escape event is a fire alarm, a danger to people, an earthquake or a smoke or gas alarm, having a sensor system comprising a plurality of sensors distributed in the building, wherein the sensors are designed to record a number of people in the building or sections of the latter as current presence data, having a people distribution module which provides a relevant distribution of people in the building, wherein the people distribution module comprises a people prediction device which estimates the relevant distribution of people in the building that is to be provided using a people distribution model, wherein the people distribution model is created using earlier presence data relating to the people in the building or sections of the latter, wherein the people distribution module also compares the current presence data from the sensor system with the relevant distribution of people from the people distribution model, having an escape route module for planning the escape routes on the basis of the model, the at least one escape event and the relevant distribution of people as input variables, wherein the evacuation system is designed to check, by comparing the current presence data from the sensor system with the relevant distribution of people from the people distribution model, whether the planned escape routes are being used and - if they are not being used - to classify them as impassable, wherein the escape route module is designed to propose alternative escape routes, wherein the evacuation system is designed to implement the planned escape routes by controlling dynamic escape route indicators automatically or with the interposition of a central fire system such that the planned escape route is displayed to the people in the building. having a model module which provides a model of the building, having an event module which provides at least one escape event in the building, wherein the escape event is a fire alarm, a danger to people, an earthquake or a smoke or gas alarm, having a sensor system comprising a plurality of sensors distributed in the building, wherein the sensors are designed to record a number of people in the building or sections of the latter as current presence data, having a people distribution module which provides a relevant distribution of people in the building, wherein the people distribution module comprises a people prediction device which estimates the relevant distribution of people in the building that is to be provided using a people distribution model, wherein the people distribution model is created using earlier presence data relating to the people in the building or sections of the latter, wherein the people distribution module also compares the current presence data from the sensor system with the relevant distribution of people from the people distribution model, having an escape route module for planning the escape routes on the basis of the model, the at least one escape event and the relevant distribution of people as input variables, wherein the evacuation system is designed to check, by comparing the current presence data from the sensor system with the relevant distribution of people from the people distribution model, whether the planned escape routes are being used and - if they are not being used - to classify them as impassable, wherein the escape route module is designed to propose alternative escape routes, wherein the evacuation system is designed to implement the planned escape routes by controlling dynamic escape route indicators automatically or with the interposition of a central fire system such that the planned escape route is displayed to the people in the building.