Tbe Orange County Tran it Di t-ricl (OCTD) has a three-phase proactive planning process for developing transportation demand and systems management (TDM and TSM) actions at suburban activity centers, and implementing them with assistance from the private sector. The first phase involves coordinating with city planners and project developers to determine needed transit amenities (turnouts, shelters, pedc Lrian access tran ii center) and preferential facilitie for ridesharers, and then integrating these amenities in the project developme111 plan through rhe local juri diction development c nditions for the project. The second phase, formation of a transportation management asciation (TMA), is based on activity center employer and employee surveys. The key objective is to assist employers and the TMA (once formed) in planning and implementing various TDM and TSM strategies for the activity center. The third phase involves analysis of employee travel characteristics and a determination of transportation infrastructure and service deficiencies within the activity center, based on an analysis of existing and future travel demand. The demand methodology used involves locally developed procedures and models run on an in-house microcomputer ystem. The travel fi recasting results are used to plan capital faci lities iacludb1g transitways HOV/transit access ramps, and park-and-rides, and to develop transit ervice for the activity center.

Orange County is located in Southern California, between Los Angeles and San Diego, and covers approximately 750 square miles. In 1989, the County had approximately 2 million people and 1.4 million jobs. The County is a typical suburban environment, with a number of activity centers that approach the density and total employment of traditional central business districts, surrounded by areas of low density residential and other development. The County has ten major activity centers located within one mile of an existing freeway, with several of the activity centers located near two or more freeways. All the centers are heavily dependent on these freeways to provide access for employees, business patrons, and deliveries.