The Trans-Texas Corrior (TTC) is a transportation network in the planning and early construction stages in the U.S. state of Texas. The network, as originally envisioned, would be composed of a 4,000-mile (6,400 km) network of supercorridors up to 1,200 feet (370 m) wide to carry parallel links of tollways, rails, and utility lines. The tollway portion would be divided into two separate elements: truck lanes and lanes for passenger vehicles. Similarly, the rail lines in the corridor would be divided among freight, commuter, and high-speed rail. The Texas Department of Transportation intends to "charge public and private concerns for utility, commodity or data transmission" within the corridor, in essence creating a toll road for services such as water, electricity, natural gas, petroleum, fiber optic lines, and other telecommunications services. The network will be funded by private investors and built and expanded as demand warrants.