STOCKHOLM, June 24 (Reuters) - World number two truck maker Volvo said on Tuesday shipments of its heavy-duty trucks rose 15 percent in May from a year earlier as U.S. deliveries rose over a weak year-ago month and shipments in Europe stayed firm.
Deliveries in North America were up 49 percent year-on-year in May while they rose 1 percent in Europe, the group's biggest market.