The book describes the structure and operation of the main machines and mechanisms used in the construction and operation of urban communications and in-plant roads. General information on machine parts is described. Information is given on the design of machines, the principle of their operation, the conditions of the most rational use of each group of machines. Main provisions on operation of track, road, transport and hoisting machines are considered. Safety issues are covered. The book is intended as a textbook for students of technical schools and can serve as a manual for a wide range of engineering and technical workers of construction organizations.