Founding of the Terran Transit AuthorityEdit
Organization and AuthorityEdit
As a body, the Terran Transit Authority controlled by the Solar Union's parliament. Internally, the TTA has a board of governors that oversee operations and an extensive library of standards-and-practices that approximate a legal code. Additionally the TTA's auditor's department also serves a lot of intelligence-gathering functions on the side. 
The TTA also helps subsidize the construction and operation of transit gates by individual transit corporations through government grants, tax breaks, and other incentitives. The TTA also furnishes each transit gate Terran Transit Marines (TTM) for security and support.
Main Source: Mobile Frame Zero: Rapid Attack Rulebook