function sendLowProfitVehiclesToDepot() {
        local roadVehicleList = AIVehicleList();
        roadVehicleList.Valuate(AIVehicle.GetVehicleType);
        roadVehicleList.KeepValue(AIVehicle.VT_ROAD);

        if(LuDiAIAfterFix.MAX_TOWN_VEHICLES - 50 > roadVehicleList.Count()) {
            return;
        }

        if((AIDate.GetCurrentDate() - m_lastVehicleRemoved) > 60) {
            local vehicleList = AIVehicleList_Depot(m_depotTile);
            vehicleList.Valuate(AIVehicle.GetAge);
            vehicleList.KeepAboveValue(2 * 365);


            for (local vehicle = vehicleList.Begin(); vehicleList.HasNext(); vehicle = vehicleList.Next()) {
                AIController.Sleep(1);
                local cargoId = Utils.getCargoId(m_cargoClass);
                local cargoWaiting = AIStation.GetCargoWaiting(AIStation.GetStationID(m_stationTo), cargoId) +
                    AIStation.GetCargoWaiting(AIStation.GetStationID(m_stationFrom), cargoId);

                if ((cargoWaiting < 150) ||
                    (AIVehicle.GetProfitLastYear(vehicle) < (highestProfitLastYear() / 6))) {

                    if(sendVehicleToDepot(vehicle)) {
                        m_sentToDepotList.AddItem(vehicle, 0);
                    }
                }
            }
        }
    }