Method for generating at least one locating signal which indicates the location of a rail vehicle, wherein - propagation time measurement values, which indicate the propagation time of radio signals (F, F, F) between one or more base stations (BS1, BS2, BS3) of one or more cellular mobile radio networks on the one hand and a mobile radio facility of the rail vehicle on the other, are recorded on the rail side and - on the basis of the propagation time measurement values, a radio-based locating signal is generated, a locating signal of another locating facility is reviewed and/or the authenticity of the base station (BS1, BS2, BS3) or base stations (BS1, BS2, BS3) sending the radio signals (F, F, F) is reviewed, characterised in that - the radio-based locating signal is generated continuously on the basis of the propagation time measurement values and on the basis of the locating signal of a locating sensor installed on the rail vehicle side, - the radio-based locating signal is firstly reviewed on the basis of a route data set or map data set available on the rail vehicle side, whereby on the one hand the authenticity of the received radio signals (F, F, F) and on the other hand the correctness of the locating signal of the locating sensor installed on the rail vehicle side are established, - the radio-based locating signal is secondly ∘ used on the first journey to set up or ∘ used on repeat journeys, by comparing propagation time measurement values at respective locating points with the already entered propagation time measurement values, to update the route data set or map data set available on the rail vehicle side, and - the radio-based locating signal is thirdly provided for safety-related applications in the vehicle. - propagation time measurement values, which indicate the propagation time of radio signals (F, F, F) between one or more base stations (BS1, BS2, BS3) of one or more cellular mobile radio networks on the one hand and a mobile radio facility of the rail vehicle on the other, are recorded on the rail side and - on the basis of the propagation time measurement values, a radio-based locating signal is generated, a locating signal of another locating facility is reviewed and/or the authenticity of the base station (BS1, BS2, BS3) or base stations (BS1, BS2, BS3) sending the radio signals (F, F, F) is reviewed, - the radio-based locating signal is generated continuously on the basis of the propagation time measurement values and on the basis of the locating signal of a locating sensor installed on the rail vehicle side, - the radio-based locating signal is firstly reviewed on the basis of a route data set or map data set available on the rail vehicle side, whereby on the one hand the authenticity of the received radio signals (F, F, F) and on the other hand the correctness of the locating signal of the locating sensor installed on the rail vehicle side are established, - the radio-based locating signal is secondly ∘ used on the first journey to set up or ∘ used on repeat journeys, by comparing propagation time measurement values at respective locating points with the already entered propagation time measurement values, to update the route data set or map data set available on the rail vehicle side, and ∘ used on the first journey to set up or ∘ used on repeat journeys, by comparing propagation time measurement values at respective locating points with the already entered propagation time measurement values, to update - the radio-based locating signal is thirdly provided for safety-related applications in the vehicle.