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Efforts to overcome the effect of defective brake valves supplied by Bendix Commercial Vehicle Systems are progressing, with Navistar Inc. reporting that all its trucks delayed for repairs have now been shipped.

YRC Worldwide Inc.’s efforts to reduce ongoing losses stalled in the fourth quarter, despite higher tonnage and higher rates as costs rose more than revenue.

Transportation advocates last week said Congress probably will have to approve another temporary extension of transportation spending legislation, as a new highway bill appeared unlikely to be passed by the time the current extension runs out March 31.

American Trucking Associations has petitioned the Federal Motor Carrier Safety Administration to narrow its definition of tank trucks to eliminate the need for many truck drivers to receive costly and unnecessary training and tank vehicle endorsements.

U.S. diesel prices surged last week, crossing the important psychological $4-a-gallon threshold and reaching their highest level since May 16, according to the Department of Energy.

Celadon Group said this week it sold its 685,000 shares, or about 6.3% stake, of USA Truck that it purchased in October.

U.S. auto sales rose in February to the fastest pace in four years, led by big gains for Chrysler Group LLC and General Motors Co., Bloomberg reported Friday.

Oil fell in early trading Friday after rising for the past two days and closing Thursday near a 10-month high, Bloomberg reported.

U.S. manufacturing activity slipped from a seven-month high in February but showed continued expansion, the Institute for Supply Management said Thursday.