The present disclosure relates to the installation of transmission lines with a transmission line advancement system. The transmission line advancement system is configured to install a variety of transmission lines into a conduit, pipe, duct, or the like, including fiber optic cables and electrical transmission lines. Furthermore, the present disclosure generally relates to a transmission line speed adjustment system for synchronizing a first location speed and a second location speed, a method for synchronizing a transmission line first location speed with a transmission line second location speed, and another transmission line speed adjustment system for synchronizing a first location speed and a second location speed.