EXHIBIT 11.1 Transport Corporation of America, Inc. Computation of Earnings per Common Share (In thousands, except share and per share amounts) (unaudited) Three months ended Nine months ended September 30, September 30, ---------------------------- ---------------------------- 2001 2000 2001 2000 ------------ ------------ ------------ ------------ Net earnings $ 478 $ 1,647 $ 102 $ 3,824 ============ ============ ============ ============ Average number of common shares outstanding 7,202,184 7,175,780 7,194,569 7,169,452 Average number of common shares outstanding, non-detachable put 0 1,155,000 0 1,155,000 ------------ ------------ ------------ ------------ Average number of common shares outstanding, including non-detachable put 7,202,184 8,330,780 7,194,569 8,324,452 Dilutive effect of outstanding stock options and warrants 15,838 39,685 9,240 16,117 Dilutive effect of non-detachable put option 0 1,510,749 0 1,437,305 ------------ ------------ ------------ ------------ Average number of common and dilutive potential common shares outstanding 7,218,022 9,881,214 7,203,809 9,777,874 ============ ============ ============ ============ Basic earnings per share $ 0.07 $ 0.20 $ 0.01 $ 0.46 ============ ============ ============ ============ Diluted earnings per share $ 0.07 $ 0.17 $ 0.01 $ 0.39 ============ ============ ============ ============