Exhibit 99(a) CNF TRANSPORTATION INC. COMPUTATION OF RATIOS OF EARNINGS TO FIXED CHARGES (Dollars in thousands) Three Months Ended March 31, 1998 1997 Fixed Charges: Interest Expense $ 8,532 $ 10,805 Capitalized Interest 490 702 Dividend Requirement on Series B Preferred Stock [1] 3,003 3,087 Interest Component of Rental Expense [2] 9,863 8,067 $ 21,888 $ 22,661 Earnings: Income before Taxes 34,077 40,172 Fixed Charges 21,888 22,661 Capitalized Interest (490) (702) Preferred Dividend Requirements [3] (3,003) (3,087) $ 52,472 $ 59,044 Ratio of Earnings to Fixed Charges: 2.4 x 2.6 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 three month period ended March 31, 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.