Traxus Heavy Industries

Not much is known about Traxus, other than it's name. There are several windows in Wind Power Station 7 on Zanzibar Island with this word (possibly the name of an Earth company) written on them, with "09" written underneath in smaller lettering. In the Halo 3 E3 2007 Trailer, Traxus has been seen on the cargo crates similar to the way COBB Industries was refrenced on crates in Halo 2.

This could be a reference to Traxus IV, an AI that went rampant in the Marathon series.