Deliveries of heavy- and medium-duty trucks in the U.S. declined 4.8% on a daily sales rate basis in August to 29,361 units vs. 29,733 in like-2001, according to Ward's data. ...

July offered some respite for big truck producers, as U.S. sales of medium- and heavy-duty models combined fell just 4.6%, the first month of single-digit decline since April....