This paper is aimed to describe the structural complexity of traffic light control system. The represents an interrelationship indicator between various elements functions. system has several additional features that are synchronized railway doorstop, and time interval for green signals expanded. For determining method its complexity, Petri net model used. Three kinds lights models explored, na...

<p><em>Umah kantur in the Gayo highlands is located Bukit Barisan section which crossed by Sumatran fault line, making </em><em>this area</em><em> prone to earthquakes. These vernacular houses were designed local people using natural materials found their environment, forming a hazard-responsive system of wooden construction. However, current generation tends...