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The algorithm of constructing the confidence interval of the model estimating the reliability of liner-tamping-straightening machines. The basis for assessing the reliability of transport-technological process initiated the concept of reliability, as the probability of reaching a liner-tamping-straightening machines ultimate goal in the manufacture of track work. One of the main factors reliability of track machines is the utilization of their time and availability to work. The guidelines are outdated factor data used during the working time that must be updated, as the machines are constantly being improved. According to the results of field testing of the liner-tamping-straightening machines was established database of values of the coefficients of availability and utilization over time. The data base values were recorded, the last two stages of verification: logical and mathematical. In the article the example of constructing a confidence interval values of the coefficient of use of time depending on the complex index of reliability: availability. To create the model formed the sample values from the database. After sampling in accordance with GOST R 8.736-2011 State system for ensuring the uniformity of measurements. The direct measurement repeated. Methods of processing the results of measurements were tested for their adherence to the law of normal distribution using the goodness of fit Pearson. Then built a model of the utilization of time depending on the availability liner-tamping-straightening machines (regression equation) and the confidence interval of the model. The proposed model works liner-tamping-straightening machines allow us to predict the main complex organizational and technological performance of a specific machine at the design stage of technological processes of track work. This method is versatile and can be used to assess the technical reliability of any machine systems, complete sets and individual cars.

The method of an estimation of reliability of functioning and probability of conditional non-failure operation of a network element telecommunication in view of factor of availability is considered

Railway telecommunications are inherent facilities participating in the organization of efficient and safe transport process. Generally, reliable operation of telecommunication devices is provided by the implementation of preventive maintenance that quality analysis is performed on the incidents during the latest reporting period. The possibility of experimental estimation using computer techniques surely has advantages. In the paper, we have defined an objective of the development of a simulation model of the operation process of railway telecommunications so as to assess the inherent availability and maintenance quality indicator. The model allows carrying out a computer experiment and estimation of the abovementioned measures in an automated way taking into account the following input parameters: failure rates, periodicity and length of maintenance, time of repair, the probability of erroneous actions of service staff and the probability of spare and replacement parts lack.