The transmission lines are elements of extreme relevance in the production of electricity, once it doesn’t matter the way it has been generated, the source of the energy or the distances to be covered, they will always be the linking point between the generating sources and the consumption centers. The State of Paraná, due to its great hydrograph, has as a characteristic to be a great producer of the electricity, and this feature has forced the population of Paraná to live with countless transmission lines (TLs) in their most diverse designs. Technology, as well as everything else in modern society sn the changing of social and economic standards, have force this product to evolve, and this evolution in search of more adequate solutions trying to match up the needs of the modern society, have led to the creation of technological variety of TLs totally adapted to the urban environment, the compact urban LT. Unfortunately, the set of laws which are available has not had any of the required adaptations, causing the laws to have gaps, wrong classifications and misinterpretations when the licensing process is concerned. The present work aims at identifying the level of the impacts of the TLs, by comparing in to the rural TLs, identifying the possible impacts that can be credit to it, discussing and advising on actions that are able to mitigate negative impacts or enhancing the positive ones. The methodology used has had as a starting point a bibliographic research of TL´s state of the art in the State of Paraná, so that, based in study concerning tree distinct points of view (professional, bibliographic as the impacted people) identify the positive and negative impacts that come from this king of construction. After ,aping those impacts, we are enable to identify the possible impact this element might have on the environment it will be inserted, identifying it in a more consistent and straightforward way, proposing actions that can mitigate or eliminate the negative impacts and enhance the positive ones, proposing a RAS reference term more adequate to this new technology. As a result of this discussion, some very clear observations of the low possible impacts of this kind of TL were found, showing that adding it to the same licensing process of rural TLs would be a waste of both money and time for both the licensing organs as well as for the companies, time and structure wich could be better employed in projects with very high possible impacts.