Despite warnings from analysts that sales of Class 8 trucks will cool off this year, January deliveries of heavy-duty trucks were up 2.0 percent over the year-ago month.
In January, 16,539 Class 8 trucks were sold.
All but one of the Class 8 manufacturers reported a sales increase for the month.
Sterling Trucks, a division of Freightliner Corp., had the largest percentage increase. Sterling sold 941 Class 8 trucks, up 26.7 percent over January 1999.
Mack Trucks Inc. also did well with 1,262 Class 8 truck sales, up 21.4 percent.
But Volvo Trucks North America Inc. experienced a significant slide in Class 8 sales, down 66.3 percent.
In January, Volvo Trucks said it would adjust production rates at its Dublin, Va., assembly plant.
The company also will revise its production schedules for the first and second quarters and lay off about 400 employees.
Medium-duty truck sales of 17,849 were up 6.7 percent in January.