Knight Transportation Inc. reported unaudited consolidated earnings results for the fourth quarter and full year ended December 31, 2011. For the quarter, total revenue increased 19.0% to $224.1 million from $188.3 million for the same quarter of 2010. Revenue before fuel surcharge increased 14.6% to $181.0 million compared to $158.0 million in the fourth quarter of 2010. Net income per diluted share increased 30.0% to $0.22 compared to $0.17 for the same quarter of 2010. Net income attributable to company increased 22.7% to $17.5 million compared to $14.2 million reported in the same quarter of 2010. The company invested $40.3 million of net capital expenditures in the fourth quarter against $4.4 million reported last year. Income from operations was $29.2 million against $23.4 million and income before income taxes was $29.5 million against $23.9 million reported last year. Adjusted cash flow from operations excluding change in short-term investments was $38.3 million against $44.6 million reported last year. For the year, total revenue increased 18.5% to $866.2 million from $730.7 million for the same period of 2010. Revenue before fuel surcharge increased 13.3% to $697.3 million compared to $615.7 million for the same period of 2010. Net income per diluted share increased 5.2% to $0.74 in 2011 compared to $0.70 in 2010. Net income attributable to company increased 2.0% to $60.2 million for 2011 from $59.1 million for 2010. For the year, net capital expenditures were $138.3 million against $91.5 million reported last year. Income from operations was $100.0 million against $95.2 million and income before income taxes was $101.2 million against $97.6 million reported last year. Adjusted cash flow from operations excluding change in short-term investments was $136.3 million against $126.2 million reported last year. The company expects net capital expenditures to decrease significantly in 2012, as company's newer fleet will require fewer replacement trucks.