Founded in 1976, TERA International Group, Inc. (TERA) is a contract research and consulting firm based in Sterling, Virginia in the Washington, D.C. Metropolitan Area. TERA’s international offices are located in Beijing (China), Manila (Philippines), Istanbul (Turkey), Bishkek (Kyrgyz Republic) and Ulaanbaatar (Mongolia).

TERA provides services in support of client needs and requirements in all modes of transport. The basis of TERA's expertise is its thorough familiarity with and understanding of the importance of transportation in providing mobility for people and access to goods to attain sustainable social and economic development, as well as achieve operator efficiency and profitability.

For three decades, TERA assisted numerous public agencies, bilateral and multilateral organizations as well as private sector and international clients in infrastructure economics and planning studies; evaluations of the effectiveness and efficiency of government policies and programs; analyses of regulatory impacts; simulation and modeling of infrastructure systems; evaluations of existing infrastructure performance and identification of new infrastructure needs; and business planning and financial feasibility analyses.