Exhibit 99(a) CNF TRANSPORTATION INC. COMPUTATION OF RATIOS OF EARNINGS TO FIXED CHARGES (Dollars in thousands) Six Months Ended June 30 1998 1997 Fixed Charges: Interest Expense $ 16,981 $ 21,067 Capitalized Interest 969 1,321 Dividend Requirement on Series B Preferred Stock [1] 5,616 6,118 Interest Component of Rental Expense [2] 19,134 16,337 $ 42,700 $ 44,843 Earnings: Income before Taxes $ 108,610 $ 95,199 Fixed Charges 42,700 44,843 Capitalized Interest (969) (1,321) Preferred Dividend Requirements [3] (5,616) (6,118) $ 144,725 $ 132,603 Ratio of Earnings to Fixed Charges: 3.4 x 3.0 x [1] Dividends on shares of the Series B cumulative convertible preferred stock are used to pay debt service on notes issued by the Company's Thrift and Stock Plan. [2] Estimate of the interest portion of lease payments. The six month period ended June 30, 1997 was restated for a change in the estimation method. [3] Preferred stock dividend requirements included in fixed charges but not deducted in the determination of Income before Taxes.