FORT SMITH, Ark., April 30 /PRNewswire-FirstCall/ -- ABF Freight System, Inc.®, has been named National LTL Carrier of the Year by the National Shippers Strategic Transportation Council (NASSTRAC). The selection of ABF® was announced April 26, 2010, during the NASSTRAC Conference and Expo in Orlando, Florida."In receiving this award we acknowledge the ABF professionals who have not only persevered through adverse market conditions but also have continued to uphold the highest standards of professional integrity and operational excellence," said ABF Senior Vice President – Sales and Marketing Roy Slagle. "We also want to recognize all the ABF customers who depend upon ABF to provide them with extraordinary customer care and innovative supply chain solutions. Knowing that their supply chain partner has earned the admiration of such a prestigious organization further validates their decision to trust ABF with their business."NASSTRAC recognizes transportation providers on a quantitative scale in five key areas: 1) customer service; 2) operational excellence; 3) pricing; 4) business relationship; and 5) leadership and technology................