a record of the volume of freight shipped and received. Transportation balances are kept for enterprises, ports, stations, highways, and regions. The Central Statistical Board of the USSR publishes yearly composite balances for the Union republics. These balances set forth the total volume of freight shipped and received, the volume of freight shipped to other points within the republic, the volume of freight shipped to and received from other republics, and the difference between the volumes of freight entering and leaving the republic. In addition, there is a breakdown according to the means of transportation used in freight shipments (railroads, river vessels, oceangoing vessels).
Transportation-economic balances are also used. These records not only contain the information described above but also identify the destination of shipments and the volume and origin of deliveries. Analyses of these records facilitate the planning of freight traffic and turnover and help to uncover any inefficiencies in shipments.
E. D. KHANUKOV