## 3 Holistic Approach Used for the Configuration of Multimodal Transportation E-Service System
The mobile devices can perform the following main functions: Wi-Fi connectivity, setting of geo-location of routing, messages about network load management, reliable connectivity, messages about security, and IP mobility [38]. Using this equipment, the providers render services using the functions of embedded hardware. The unit of analysis can be a device for special security applications or a general-purpose device that provides internet services, such as a smartphone or tablet. The difference between the vehicle's mobile devices is often logical [39]. The types of WAVE devices are installed near a road or other special places, such as intersections or parking lots. These devices are equipped with short-range wireless technologies, such as IEEE 802.11p or others, that connect to the network infrastructure. According to [1; 39], the main functions and procedures associated with the interchange of data structures are as follows:  
* Use of safety apps such as accident warnings, road surface information, V2I, and acting as a data source;
* Internet connection to the vehicle's devices;
* Communication in the automotive industry. The range of vehicles must consist of the vehicle unit and one or more units of analysis. The operating system and the AU can be installed as a single device. In the automotive industry, contextual data from installed sensors are collected and stored in a database. The vehicle-to-vehicle (V2V) series communication is part of an ad hoc network of vehicles with electrical units. Vehicles communicate with each other using integrated hardware and MANET, which makes it possible to distribute and decentralize the connection fully. Cars can communicate directly with each other when direct wireless communication is possible, creating a single-jump vehicle (V2V) connection. If direct communication is not possible, the information is transmitted to other means of transport as intermediaries until the recipient is contacted. The domain infrastructure applies to all these components, especially the RSU, which connects to the network infrastructure or the internet, providing access to the vehicle's mobile network. The onboard unit communicates with multiple nodes, providing unsafe services using other mobile communication technologies (such as GPRS, GSM, 4G, HSDPA, UMTS, and WiMax) [37]. Therefore, it is important to understand how the transportation process is provided, and in this case, the modeled conceptual structure with integrating contextual information helps us form needed algorithms for e-service provision systems (Figure 1). In multimodal and/or intermodal transport, sea and road transport interoperability is usually divided into three parts: The cargo is concentrated at the central station when the technical requirements meet the requirements for these loading and unloading operations. Cargo is transported by road to the station from where the train goes to the port station. Upon arrival at the port, the conditions for direct loading and unloading are determined, taking into account the time of arrival and the volume of the container. Containers can be delivered directly to the port by road. Suitable containers are selected for cargo transportation after the delivery of containers by rail and road transport. The cargo is loaded onto the dock. After that, the ship leaves the port in time, and when it arrives at the port of destination, it can be said that the process repeats itself according to the same principle. Figure 1: Systematizing the cargo transportation process using a scheme of functions, participants, and information flows. When performing such transport, the main problem is disseminating information about the transported unit and its input into the relevant computer programs--i.e., each mode of transport has a database that communicates with other vehicles. Therefore, double data collection is required (Figure 2), which prolongs the process and creates the possibility of errors.