The trade routes were constructed by the ancient and powerful Yanhacne Empire. The routes are a series of holes in real-space, that create another dimension which travels at a rate faster than light. The trade routes are accessed by the Yanhacne's Yuril Rings which accelerate and deccelerate a ship to and from greater than light speed. The rings work for some unknown reason, but are found to exist at every known inhabited planet. The only issues with the trade routes are that most species cannot handle faster than light speed for too long, and therefore there must be a series of stops if the voyage will take multiple days (the average Iorou can survive in this "extra dimension" for about two days.), and all objects in real-space have an influence in the extra dimensional space. If any object comes to close to these influences it will be instanly ripped from the extra dimensional space, and destroyed.
The trade routes must be accessed by a series of rings, called Yuril Rings, that gradually move the ship to a near light speed. If the ship doesn't properly pass through these rings, a ship will be torn to pieces when it enters the trade routes. The routes can also carry transmissions through the trade routes, which is also a way of using the routes. A ship's computer must first connect with the rings, transmitting the galactic coordinates of the destination to the ring, as well as the size and type of vessel. Once the ring recieves the transmission, the ring sends the message through the route to the destination rings. Once the information is recieved by the destination rings, the departure rings activate, and allow the ship to begin the process. The destination rings create an artificial disturbance that pulls the ship out of the route, and deccelerates the ship back to a speed that can be handled by real-space. It is believed that the Yanhacne's controlled many areas not known to the civilized galaxy, it is believed that if coordinates are not entered, but the rings are active, the craft may pass to an unknown inhabited system.
The name trade route has also been expanded to include artificial designator tags for specfic trails through space that facilitate both mapmaking and travel. These named routes are defined in official star charts with exact defined coordinates for each planet on the route. The named routes are generally routes that have been discovered to be able to handle a greater number of ships at a time. Usually, when travelling between planets, ships are known to travel along these set routes.