In preparation for the 2010 Winter Olympic Games, the City of Vancouver joined the Olympic and Paralympic Transportation Team (OPTT), a multi-agency organization responsible for the transportation planning and operations of the Games. Consisting of the Vancouver Organizing Committee for the 2010 Winter Olympic and Paralympic Games (VANOC) and several government partners, such as the BC Ministry of Transportation and TransLink (SCBCTA), the OPTT streamlined their process for decision-making by defining specific roles and responsibilities for each of its member agencies. The City of Vancouver took on the responsibility of modeling traffic and projecting travel demand during Games-time in the Greater Vancouver Area (GVA) to assist in the preparation and planning for this world-class event. This paper details the development and implementation of three transportation network models created by the City of Vancouver and PTV America, Inc. which were used for decision support and aided in the creation of the Host City Olympic Transportation Plan (HCOTP)