UP Lufkin Sub.
The Lufkin Sub is known as the "Rabbit Line", and is the former SP from Shreveport & Lufkin to Houston. It is 228.7 miles long and dispatched by track warrants. With the exception of rock trains to Bender and Livingston, all traffic is southbound. Trains include ZYCHO, AASEW, and BNSF MMEHOJ. All the rest are manifests from Pine Bluff. There are about 15 trains daily on the Lufkin Sub which enters Houston via Tower 76 and Tower 26. Listen on 160.320 and 160.770, closer into Houston where trains talk to Terminal Dispatcher 2.

East Belt & Port Terminal
The East Belt loops around the east end from Belt Jct, to Pierce, then Settegast Yard before heading south to Tower 87, Tower 85, and Double Track Jct at South Yard. It also consists of the Strang Sub heading along the ship channel to LaPorte. Most traffic is chemical trains, locals, and transfers between various Houston and Port yards. The PTRA handles a lot of the traffic in the Port area and generates many trains and transfers from their Pasadena and North Yards. Terminal Dispatcher 3 controls the area on 160.365. The PTRA North Yard is their largest and operates on 160.710.

West Belt
The West Belt runs north/south through Houston from T&NO Jct past BNSF South Yards to Cullen. Then it crosses the Terminal Sub at Tower 26, and up to Belt Jct where BNSF heads west, UP heads north, and the East Belt starts eastward. The West Belt is controlled by Terminal Dispatcher 2 on 160.770. Most of these trains are BNSF trains to & from South Yard, UP trains from Lufkin, and UP trains to and from Palestine and Beaumont. This is essentially everything headed north/south through Houston.