Control Tracks act like weak boosters that only boost carts in one direction. Any carts travelling in the opposite direction will be gradually slowed. Powering them will reverse the direction of the track. They are cheap to make and will propagate power for up to sixteen blocks in either direction, similar to Powered Tracks. The default direction can be changed with a crowbar.
Trivia (Previous Versions)Edit
Control Tracks were the third track implemented in Railcraft's early alpha versions, and unlike the Boarding Track and One-Way Track that came before, the Control Track suffered greatly from an incomplete design concept. Because of this they went through at least four radically different designs, the first being that they only boosted carts in one direction when powered by redstone. The ability to slow and reverse the carts direction was the next iteration. At this point redstone current was still require and they still had no name. The third iteration had them reverse directions on redstone current and it was this version that made it into release, though the texture sheet still possessed the unpowered textures until version 1.6.0. The name "Control Rail" was chosen during a flash of inspiration shortly before v1.0.0 was released, prior to that the working name had been variations of "slow-booster" or "booster-brake" and was changed even more frequently that the track's function. Surprisingly enough, the Control Track eventually turned out to be one of the most useful tracks included in Railcraft, thought they tend to get over-looked for the flashier tracks. Version 1.6.1 saw Control Tracks undergo another significant change. The ability to change the facing of the track with the crowbar. Prior to this, unpowered tracks always faced a certain direction. While this was ok for general use of the tracks, it became a limiter when attempting to use Control Tracks in advanced settings that involve unrelated redstone currents activating the tracks. After the change, simply powering the Control Tracks allows them to ignore any nearby changing redstone currents.