## 2 Review of Literature
### Logistics Process Reliability Assessment  
In order to develop the method for process reliability assessment, it is necessary to review the current state of knowledge on the available and previous process assessment methods. This chapter focuses on reliability-oriented methods and models. The literature review was also described in relation to logistics and transportation systems. The current challenge facing logistics and transportation systems is to ensure process reliability based on the information available. Reliability is also described as punctuality, meaning that processes are carried out according to a specified schedule. Therefore, this sub-chapter describes the methods and models of reliability, taking into consideration punctuality, as per the diagram shown in Figure 2.  
The papers presented in Table 2 most often concern the determination of reliability and technical readiness, taking into account damage to an engineering facility--area I (17 papers); repair and operation--area II (14 papers); and determination of the readiness value--area III (11 papers). In 11 articles, the case of an execution of the transportation task was analyzed; the main limitation is the lack of consideration of how information impacts the performance of the said task. If the authors refer the information to the task execution, they do not take into consideration the quality of the provided information, i.e., timeliness, completeness or intelligibility, etc. Figure 2: Scheme of literature review regarding reliability. The academic literature on the methods and models of reliability assessment mainly refers to the systemic approach, for the most part assuming two conditions: worthiness and unfitness. In the analyzed papers, reliability refers to the timely provision of services in various modes of transport. In some papers, there is no reference to the effects of delays and no indication of the precise critical value of the delay, past which it will be known whether disruption to the process execution will occur. There are no methods for assessing reliability in the literature, in which not only the timely execution of services is assessed but also the quality of the information provided and the effects of its lack. Based on the above conclusions, the table presented in Appendix C summary was drawn up, which shows what was taken into consideration in the research on information flows and what was missing. The summary concerns three areas in which the analysis of the literature review was performed, i.e., information flow, information quality, as well as reliability (methods and models), all these in relation to logistics and transportation systems. The first issue relates to the manner the system (or process) was examined. In all analyzed works, it was treated in its entirety; there was no assessment of individual components, subsystems or sub-processes. It was similar in the case of information flow, where the flow is described as an entirety, it is not assessed as a single piece of information, and this issue was discussed in all analyzed areas. The analysis of the definition of information showed that a specific sender or recipient was not taken into consideration in all papers. Additionally, in the works from the first area, the sender and the recipient of the message were precisely defined, mainly in the air transportation mode, where communication took place between the pilot and the air traffic controller. Furthermore, in the case of the analysis and evaluation of the provided information, there is no reference to which data, e.g., in a specific document, are necessary for the execution of a given task. Thus, when assessing, e.g., the aspect of completeness, the authors infer that the information was incomplete; there is no indication as to whether or not the task can be performed or not without this specific information. In the third area, the sender and the recipient are also defined, most often in passenger information systems.