Tri-Met also operates Portland Vintage Trolley, which runs on some of the lighter rail lines found in Downtown Portland area as well as operating Portland Streetcar, that fall under the ownership of City.
Tri-Met system concurs with Talcott Parsons theory of social action theory in the sense that it was formulated out of a necessity to streamline or bring social order to the Portland metropolitan area in transport sector (Taylor 89). The system came into place replacing existing bus services but still was able to maintain the positivism in terms of scientific rigor and acknowledgement of the human action, which was subjective in dimension. The aspect of motives forming part of human actions is clear in the outcome of the Tri-Met system coming into being and successfully taking over the transport industry of the three counties. While the move/action by Oregon legislature to monopolize the transport operations in the three counties through Tri-Met might have been criticized or condemned in the humanistic sense, the social science behind it was consideration of ideals, purposes, and ends. This is what Talcott Parsons social action theory demands even in formulation of systems that work efficiently and effectively like the Tri-Met system (Taylor 89).
Oregon’s Tri-Met transportation system is positivistic but not absolutely since there are those who share negative sentiments against it, which is part of theorizing social action. In fact, the Tri-Met system has become so popular that it serves as a function of the cultural and social system in Oregon. In action, the Tri-Met system has proved to bring a sense or level of order and harmony in the transportation sector of Portland metropolitan area. Robert K. Merton on the other hand was more concerned with sharpening of conceptual tools that can be used in functional analysis (Holmwood 87--109). Manifest and latent functions are the outcomes of these social scientific concepts.
The Tri-Met system was a