Class 8 U.S. retail sales in December rose 15.5% compared with a year earlier, and reached the high point for the year, WardsAuto.com reported Jan. 12. Sales hit 24,716 compared with 21,402 in the 2020 period. For the full year, sales climbed 15.6% to 221,889 compared with 191,900 a year earlier, according to Wards. Truck makers\u2019 respective 12-month market shares remained largely the same \u2014 except for Kenworth Truck Co., a unit of Paccar Inc., whose share fell to 14.6% compared with 15.7% a year earlier.\nLearn more about your ad choices. Visit podcastchoices.com/adchoices