Capital Hill PUD Traffic Safety Analysis <br />(Revised) May 17, 2017 <br />3.0 DEVELOPMENT AND TRAFFIC CONDITIONS <br />3.1 Land Use <br />The result of the land use applications will allow five existing tax lots on the site to be divided <br />into 35 separate tax lots. The post developed conditions may include up to 37 new residences <br />bringing the unit total to 43, including three existing single family dwelling units and three <br />existing attached multi-family dwelling units. A likely development scenario could include up to <br />28 new single family detached housing units (dwellings) and up to nine (9) new multi-family <br />attached housing units. Two existing driveways on Capital Drive are proposed to remain to <br />continue to serve existing residences at 2875 and 2955 Capital Drive, while the other two <br />driveways (as described previously) will be improved to create a private loop through the site to <br />access newly constructed residences and existing residences at 2855 and 2995 Capital Drive. The <br />two accesses proposed to be utilized as a loop through the site will not provide connectivity to <br />other existing driveways. One additional driveway is proposed on Capital Drive between Cresta <br />De Ruta Street and Alta Vista Court that will provide access for two new parcels created with the <br />proposal (lots 19 and 20). A site plan is provided as Appendix E. <br />3.2 Development Traffic <br />Based on available national average trip generation rates published by the Institute of <br />Transportation Engineers (ITE) in the Trip Generation Manual, 9`" Edition, peak hour trip <br />generation of the entire development site (existing + proposed), with a total of 31 single family <br />detached dwelling units and 12 multi-family apartment units, would create a demand of up to 29 <br />AM peak hour trips and up to 38 PM peak hour trips, which would equate to about one new car <br />every two minutes during the peak hours. Since the development does not result in greater than <br />100 peak hour trips during any one peak hour period, the proposal does not require a traffic <br />impact analysis based on the TIA applicability of City of Eugene Code (EC) 9.8670 which looks at <br />the entire site's highest peak hour trip generation potential. <br />To approximate new daily traffic resulting from proposed development, a reference was made to <br />tube count data collected near Cresta De Ruta Street that indicates the average daily trip <br />generation per occupied dwelling unit is approximately 4.53 trips/unit/day, calculated from an <br />average of 59 daily trips counted and 13 existing dwelling units occupied from Cresta De Ruta <br />Street to the end of Capital Drive (including multi-family and single family residences). The <br />calculated trip generation rate is lower than the daily rate provided by the Institute of <br />Transportation Engineers (ITE) trip generation derived rate. The difference in rates is likely due <br />to the study area's geographic location and the separation distance to retail developments and <br />other urban development attractors that would increase the average daily trip generation <br />potential. There is no reason why the post development traffic conditions would be expected to <br />generate any levels of traffic at a rate greater than the count data indicates on a per unit basis. <br />The increase in traffic and the types and levels of traffic generated maintains consistency with <br />the residential use designation of the site, surrounding development and the intended use of the <br />existing street. The intensity of the proposed development is consistent with the density and <br />objectives of the South Hills Study. The addition of the new trips will not change the functional <br />classification or traffic character of Capital Drive. <br />© Branch Engineering, Inc. <br />Page 1 9 <br />