A subdivision of the corporation, Tterrab Highway Administration, worked on highways since its corporate symbol, a lower-case "a," is visible on the emergency doors in the highways of the NM 105 E. The name of the corporation is seen printed on the highway signs of the Tsavo Highway.
In October, 2552, during the Battle of Earth, Mombasa was abandoned and Tterrab Industries appeared to have been locked up. The area in front of it was the site of intense fighting between Marines of the 405th Marine Infantry Division and Covenant Wraith tanks, eventually culminating when John-117 and a Scarab arrived in the area. The building was not harmed, but it is presumed destroyed when the city was glassed by the Covenant.
- Tterrab" backwards spells "Barrett," which references Bungie level designer Chris Barrett.
- The sign on the Tterrab building in the level Metropolis in Halo 2 originally read "Askloun." A similarly named company, "Asklon," would later appear in Halo 3: ODST.
- In Halo 2: Anniversary, the Tterab Industries sign in Metropolis was replaced with Franchbot Industries.