Source: U. S. Department of Commerce, Weather Bureau, Climatological Data, February and March, 1964. Source of basic data: Interstate Commerce Commission, statement M-400. Train accident rate-Train accidents per million locomotive and motor train-miles,1 1 Computed from miles actually run in road service and hours actually worked in yard service by locomotive engineers. Miles and hours for locomotive engineers are reported monthly only for class I line-haul railroads. Prior to 1965 class I line-haul railroads employed 91.92 percent of the total train and engine service employees in the industry (average of years 1958-63, with very minor variations from year to year). Beginning in 1965, this ratio was changed to 91.28 percent, when the relationship of class I railroads to all railroads decreased due to a change in the ICC definition of class I railroads. The locomotive and motor train-miles computed for class I line-haul railroads were expanded by applying these ratios. Source of basic data: Interstate Commerce Commission, statements M-300 and M-400, and Transport Statistics in the United States. Train accident rate-Train accidents per million locomotive and motor train-miles,1 1961-65 1 Based on locomotive and motor train-miles for 1961-64 as revised by H. E. Greer; 1965 data from ICC statement M-400. Source of basic data: Interstate Commerce Commission, statement M-400; Report to the Committee on Commerce, U.S. Senate, on the administration of Public Law 88-103, Witness: H. E. Greer, p. appendix 2. CHART II. Total precipitation (inches), April 1964 Source: Based on daily precipitation records at about 870 Weather Bureau and cooperative stations. U. S. Department of Commerce, Weather Bureau, Climatological Data, April, 1964. Number of other train accidents, all U.S. railroads, 1961–65 Month Source of basic data: Interstate Commerce Commission, Statement M-400. Other train accident rate-Other train accidents per million locomotive and motor train-miles,' all U.S. railroads, 1961-65 1 Computed from miles actually run in road service and hours actually worked in yard service by locomotive engineers. Miles and hours for locomotive engineers are reported monthly only for class I line-haul railroads. Prior to 1965 class I line-haul railroads employed 91.92 percent of the total train and engine service employees in the industry (average of years, 1958-63, with very minor variations from year to year). Beginning in 1965, this ratio was changed to 91.28 percent when the relationship of class I railroads to all railroads decreased due to a change in the ICC definition of class I railroads. The locomotive and motor train-miles computed for class I line-haul railroads were expanded by applying this ratio. Source of basic data: Interstate Commerce Commission, Statements M-300 and M-400, and Transport Statistics in the United States. |