Established in 1902, the Washington, D.C.-based American Road & Transportation Builders Association (ARTBA) advocates strong investment in transportation infrastructure. The association has more than 8,000 members from the public and private sectors. The U.S. transportation construction industry that ARTBA represents generates more than $580 billion in annual economic activity and supports more than 4 million American jobs. ARTBA membership divisions include: contractors, planning & design, transportation officials, traffic safety, materials & services, public-private partnerships, research & education, and equipment manufacturers. ARTBA's members have extensive knowledge and experience in building the road, rail, air, port and waterway facilities of the United States.