Abstract
ABSTRACT:
In the paper are presented two methods, one graphic and another analytical for the establishment of the optimum duration for the exploitation of the transportation systems from agriculture. In this regard a series of incomes and expenses realized through these systems, are taken into account and are reported constantly to the reliability of such systems. Through levels of high reliability of the transportation systems it is ensured the framing of this activity in the production technology from agriculture and in the optimum time of work imposed by the laws of biology. The renunciation of an agricultural transportation system after the passing of the optimum exploitation duration is imposed by the economic efficiency realized by the system itself.