The article provides a solution to the problem of optimizing the frequency of maintenance on the example of the frame of a KamAZ-4308 truck. As an optimization criterion, it is proposed to use unit costs for a given time, including the costs of eliminating hidden failures. The calculation of the frame resource is carried out, the empirical and approximating functions of the general population of the finite volume are obtained.

Keywords: car, probability of uptime, maintenance, optimization, unit costs, reliability assessment

Тhe article provides a program of general and in-depth diagnosis for the entire fleet for the year for the motor company " Avtomobilist-3". The issues of expert diagnosis of car malfunction are touched upon.

Keywords: car, diagnostics, maintenance, diagnostic information, reduce downtime, database

A systematic analysis of the trends in the development of the electric transport industry has been carried out. Revealed a significant increase in sales of electric vehicles. On the basis of the analysis formed the advantages and disadvantages of its application. Particular attention is paid to the use of alternative energy sources.

Keywords: car, electric transport, environmental pollution, solar energy, energy, battery

The article discusses the features of motor vehicle leasing. The advantages and disadvantages of this form of increasing and updating the rolling stock of the enterprise are formulated. The analytical data of this market segment are given.

Keywords: car, vehicle, motor vehicle leasing, rolling stock renewal, improving the competitiveness of an enterprise, market

In the article the reasons of occurrence of uneven wear of brake pads are considered. The main types of the indicated malfunction are given. Recommendations for elimination in road conditions are given.

Keywords: car, brake system, brake shoe, wear pads, malfunction

The system analysis of the main directions of the fourth scientific and technological revolution, called "Industry 4.0" in the field of road transport, is conducted in the article. The essence of the industry 4.0 is the development of the digital economy using cyberphysical systems, the Internet of things and large data. Applicable to road transport can be identified three areas: the creation of an unmanned vehicle, the development of technological support for the movement of trucks in the convoy, the development and implementation of "automobile Internet". At the same time, there are a number of technological, legal and ethical problems that hamper the large-scale development of a new generation of transport.

Keywords: Industry 4.0, unmanned vehicle, Internet of Things, Cyberphysical systems, autonomous transport, cloud technologies

Тhe article deals with the malfunctions of the vehicle's brake system, resulting in uneven wear of the brake pads. Illustrations of damaged pads are given. Recommendations for troubleshooting are given.

Keywords: car, brake system, brake shoe, wear pads, malfunction

In the article questions of diagnosing of a technical condition of antiblocking system (ABS) of brakes of the car are considered. The main types of faults and the causes of their occurrence are outlined. Recommendations are given to drivers for the prevention of damages or failures of ABS

Keywords: car, anti-lock braking system, diagnostics, stand, malfunction, failure

A model for choosing the optimal version of the excavator arm is presented, combining classical methods of decision making and statistical modeling of the bearing capacity and loading parameters

Keywords: decision making, reliability, resource, modeling, single-bucket excavator, hilt, optimization

The article raises the questions of expert diagnostics of autorefrigerators in the conditions of car-care center. A decision tree was built with a low oil pressure in the engine. Identified factors affecting the effective operation of the refrigeration unit.

Keywords: Specialized transport, car-refrigerator, maintenance, diagnostics, car service, decision tree

In the article the analysis of technical and economic indicators of the auto enterprise is carried out. Expected indicators: coefficients of technical readiness and output; total vehicle fleet run; time in the attire; number of car-days; operating speed; income and expenses of the enterprise

Keywords: Road transport, technical availability ratio, output ratio, total mileage, operating speed, efficiency of work

In the article the choice of the type of thermal insulation of the isothermal van is substantiated. We consider polyurethane foam, expanded polystyrene and liquid heat insulation. Materials are compared by the amount of heat losses, the thickness of the insulated layer and the cost of the device.

Keywords: isothermal van, heat insulating material, polyurethane foam, expanded polystyrene, liquid heat insulation, heat losses

The article proves the urgency of the problem of increasing the efficiency of the operation of trucks. The data obtained by the laboratory for controlling the reliability of machines of the Academy of Construction and Architecture of the DSTU (RISI) are given.

Keywords: Car, longevity, repair, equipment failure, reduction of machine downtime, work efficiency, fatigue.

The article proves the urgency of the development of an expert system for diagnosing the malfunctions of refrigerated trucks. An overview of the main models is given. The tasks of diagnosing refrigerating plants are outlined. The main approaches to troubleshooting the refrigeration unit are formulated.

Keywords: Specialized transport, refrigerator, diagnostics, troubleshooting, reduction of machine downtime, work efficiency

in the article the method of finding the optimal value of the probability of failure-free operation of machine parts with constraints on resources, the characteristics of the structure and economic performance. The algorithm for calculating the total economic cost of failure removal, implemented in the software algorithm block MRM and choosing the best option of manufacturing parts. As an example, the handle of the EC-14, single-bucket excavator. The optimal uptime probability value equal to 0.999 and corresponds to the structure, which is 7% more than the original, but is reduced to 2.2 times the total cost of eliminating failures.

Keywords: reliability, probability of failure-free operation, resource, machine parts, shovel, handle, optimization, the cost of failure removal, modeling, economic calculation