Abstract: A computer-implemented method performed for alerting the presence of one or more combination vehicles, each comprising a first vehicle unit and one or more second vehicle units and provided with a plurality of alerting units. Each respective first vehicle unit and respective one or more second vehicle units comprises a respective alerting unit out of the plurality of alerting units. The method comprises obtaining movement data indicative of one or both of a current movement or an expected movement of the one or more combination vehicles from at least one data communicating unit comprised in any one of the one or more combination vehicles. The method further comprises determining the current movement and/or the expected movement of the one or more combination vehicles. The method further comprises triggering a sound alert on the plurality of alerting units.

Abstract: A computer-implemented method performed for alerting the presence of one or more combination vehicles, each comprising a first vehicle unit and one or more second vehicle units and provided with a plurality of alerting units. Each respective first vehicle unit and respective one or more second vehicle units comprises a respective alerting unit out of the plurality of alerting units. The method comprises obtaining movement data indicative of one or both of a current movement or an expected movement of the one or more combination vehicles from at least one data communicating unit comprised in any one of the one or more combination vehicles. The method further comprises determining the current movement and/or the expected movement of the one or more combination vehicles. The method further comprises triggering a sound alert on the plurality of alerting units.