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BI application development and Business Intelligence in general are no longer new concepts for the market. Nevertheless, there is practically no literature of practical significance. This article is aimed at analyzing the author’s practical experience in forming conclusions and specific tips for use by a novice business analyst in his work. Inexperienced professionals just starting their career in BI may face a lot of problems, especially when working with business clients and developers. Therefore, the article pays special attention to the description of the objects of research and their correct interaction with each other. A detailed analysis of the initial stages is also given: from the customer’s need for application development to setting clear detailed requirements for the contractor. Logistical relationships are very important here. The result of this work was the proposed method of step-by-step work and analysis of difficulties that may occur on the path of a “newly minted” business analyst. In addition, the situations considered illustrate decision-making based on adaptive control in transport systems. The infrastructural environment is investigated and modeled. The systems assist the driver in making decisions in a road situation based on infrastructure analysis.