1986年是苏联第十二个五年计划(1986～1990年)的第一年。在这一年中,苏联投入使用的新线为548km(完成计划的100.8％)、复线为720km(完成计划的118％)、电气化线路为2109km(完成计划的101.7％)。有2281km线路装上了自动闭塞装置(完成计划的141.0％),架设了2964km的国际通讯电缆线(完成计划的22％),建成了13km的地下铁道(完成计划的100.0％)。到12月24日已提前完成了年度货物发运计 1986 was the first year of the twelfth five-year plan (1986-1990) of the Soviet Union. During the year, the new line put into use by the Soviet Union was 548km (100.8% of the completed plan), 720km for the second line (118% of the completed plan) and 2109km for the electrified line (101.7% of the planned completion). There were 2281km lines equipped with automatic blocking devices (141.0% of the planned completion), 2964km of international communication cables (22% of the completed projects) and 13km of subway (100.0% of the completed projects) completed. By December 24, the annual shipment plan has been completed ahead of schedule