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7kJ e Trip Generation . I. The trip generation associated with each of the land uses in the proposed project is shown in Table 5-3. Trip generation estimates are based on rates documented in "Trip Generation", 6th Edition, published in 1997 by the Institute of Transportation Engineers. Trip generation rates are the number of trips per square foot of development as surveyed at existing development sites. The rates are generally for isolated, single use developments. In a mixed-use development, there will be a number of multi-purpose trips such as an employee of the business park who stops at the gas station on his way home or the resident who stops for coffee at the convenience store. Since most of the multi- purpose trips will be associated with the commercial development, a multi-purpose trip reduction factor of 15 percent has been applied to the commercial trip generation. This percentage is consistent with guidance given in "Trip Generation." Using this methodology, the proposed mixed-use development project is estimated to generate approximately 26,500 daily trips with 2,535 in the PM peak traffic hour. It should be noted that previous traffic studies of the project site including the Universitv of Minnesota Parcel Traffic Studv used a higher trip generation rate for the business park land use based on the 5th Edition of "Trip Generation". The trip generation estimates shown in the table are based on the most current 6111 Edition rates. In order to assure a conservative analysis and to maintain consistency with previous studies, the traffic forecasts and analysis are based on peak hour site trip generation rates from the 51h Edition, which are higher and result in trip generation of 2,706 trips (858 inbound and 1,848 outbound). Trip Distribution The geographic origins and destinations of site generated traffic is shown on Figure 5-2. This distribution is taken from the Universitv of Minnesota Parcel Traffic Studv. The directional distribution of site generated trips was estimated based on the roadway system and patterns of development in the metropolitan area. Traffic Assignment The site generated traffic volumes were assigned to the street system in accordance with the trip distribution. The traffic assignments assumes site access consistent with the proposed development plan including the completion of Rice Creek Parkway between CR I and CR J and another site access to CR J east of Rice Creek Parkway. The forecast PM peak hour traffic volumes are shown on Figure 5-3. The figure indicates both the site generated and total traffic volume at each intersection serving the site. Intersection Analysis The location of intersections considered in this analysis is shown on Figure 5-4. As previously described, the proposed project includes the completion of Rice Creek Parkway through the project WISP ARK Rice Creek Corporate Park Draft EIS December 10, 1998 Page 65