Technical operation of construction, road and utility vehicles . Definition of technical condition and def” under the authorship of a team of authors, including C. C. Marchenko, is a unique work that will become an indispensable assistant for specialists in the field of operation and maintenance of equipment . This publication is aimed at professionals, students and anyone interested in the technical aspects of the work of construction and road machines, as well as municipal machinery. The book discusses in detail the key aspects of the technical operation of machines, ranging from their purpose and ending with methods of diagnosis and assessment of the state. The authors pay special attention to practical issues, which makes the material accessible and understandable even for those who are just starting their way in this area. Readers will be able to learn about modern methods for determining the technical condition of machines, as well as how to identify and eliminate defects, which is an important aspect for maintaining the equipment in working condition. This book will be of interest not only to students of technical specialties, but also to practicing engineers, mechanics and machine maintenance specialists who seek to improve their skills and deepen their knowledge. It can also attract the attention of managers of enterprises engaged in construction and road works, since an understanding of the technical condition of machines directly affects the efficiency of work and safety at work. The topics raised in the book cover a wide range of issues, including diagnostics, preventive maintenance, and methods for assessing the wear and tear of machines. The authors emphasize the importance of regular monitoring of the technical condition, which avoids serious breakdowns and prolongs the service life of the equipment. In today's market, where every detail matters, the knowledge contained in this book becomes particularly relevant. The style of the authors is distinguished by clarity and accessibility, which makes complex technical aspects understandable to a wide audience. The book is replete with examples from practice, which allows readers not only to learn theoretical knowledge, but also to see their application in real conditions. This makes the material more lively and fun, and also contributes to better memorization of information .. If you are looking for literature that will help you understand the intricacies of the operation of construction and road machines, as well as methods for diagnosing and assessing their condition, then this publication will be a real find for you. It will not only enrich your knowledge, but also help you become a more confident specialist in your field. Technical operation of construction, road and utility vehicles . Defining Technical Condition and Def is not just a tutorial, but a complete guide that will be useful throughout your professional career. Do not miss the opportunity to get acquainted with this important work that will help you in your professional growth and development.