Laserfiche WebLink
5.6.2 Impacts <br /> Introduction <br /> The entire vicinity of Main Street, including Fashion Square <br /> and Town and Country, is undergoing intensive new development. As a <br /> result, the Cities of Santa Ana and Orange jointly developed a <br /> computerized travel model to analyze the traffic impacts of new projects <br /> in the area. (That travel model, referred to as the SATC/TSIP Model, is <br /> LI <br /> a derivative of the regional Multi-Modal Transportation Study (MNTS) - <br /> Santa Ana Transportation Corridor (SATC) Model. The only difference is <br /> Li that the SATC/TSIP version of the model disaggregates the area of North <br /> Santa Ana/South Orange into smaller zones and includes a highway network <br /> I,: with Primary and Secondary classifications rather than only the "Majors" <br /> included in the MMTS/SATC Model). <br /> K <br /> The SATC/TSIP Model was created for the purpose of analyzing <br /> L traffic impacts of various development proposals as they come forth. <br /> The SATC/TSIP Model incorporates an estimate of the maximum density <br /> envisioned for each zone along Main Street as well as current estimates <br /> L for additional development in the remainder of the region. This model <br /> formed the basis for travel forecasts expected from the maximum planned <br /> I <br /> U development in the Main Street area and a master plan of transportation <br /> improvements for highway and transit facilities was developed. <br /> The availability of the travel model and the designation of <br /> L the zones in the vicinity of Main Street are well suited for the traffic <br /> analysis necessary in the EIR process. In fact, the regional model, <br /> which has been refined for detailed analysis of the study area, provides <br /> considerable more information for an EIR study than is normally <br /> * available. The model provides for distribution and assignment of travel <br /> on region-wide basis. Frequently, traffic studies for EIR purposes must <br /> make large assumptions as to the trip generation distribution and <br /> assignment from a new or expanded facility. These assumptions can be a <br /> weakness when the project under consideration is large and the resulting <br /> 84