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02/23/1998 21:16 608-8312150 PROGRESSIVE DESIGNS ' PAGE 81 • d rfi 37 Glacfer5 ledge 5quare Gross Plains, WI 53525 4•31-04 y development, de6ign, real estate, investments Mark Roffers Senior Planner, Dane County Zoning RE: YAHARA CROSSING CENTRE traffic analysis. CTH "NP'(a controlled access road): Current Average Daily Traffic(ADD 15,600 YAHARA CROSSING CENTRE 44 two bedroom residential units. 12,000 square feet gross leasable area. 2,600 square feet net retail convenience store. The daily trips generated by the proposed project were calculated using standard Institute of Transportation Engineers(1TE)and Dane County Regional Planning Transportation trip generation rates. For the residential component,44 two bedroom residential units times 5.5 trips/day/residence equals 242 trips ADT. Since the proposed development consists of a mixture of residential and commercial uses a proportion of daily trips generated would be internal to the site. ITE cites limited data from various sources showing that the internal capture trip rate is between 12 to 20 percent for all daily trips and 52 to 66 percent for all commercial trips. Thus of the total 242 trips generated 39 are internal trips(that is 16%of total)thereby reducing the ADT to 203 trips. For the commercial component since this is only neighborhood shopping and office area we have used 50 trips per 1,000 square feet of gross leasable area(GLA)per 1TE_ 12,000 SF GLA times 50 trips/day equals 600 trips/day. From this number we subtract 39 internal trips generated by the residential component. There would be then 561 commercial trips generated. For the convenience store component we have used 322 trips per 1,000 square feet net retail area ADT. Thus 322 trips times 2,700 square feet equals 837 trips ADT. The majority of the commercial trips to a small neighborhood center such as YAHARA CROSSING CENTRE, per 1TE,would be pass-by and diverted linked trips,that is trips that are already on CTH"M"and adjacent roadway system. Based on the 1TE nip generation report, the proportion of pass-by and diverted linked trips is estimated at 85.6%of the total trips.Thus of the 1040 total commercial trips to YAHARA CROSSING CENTER only 150 trips would be primary trips not captured from the adjacent roadway system The total potential trips generated.by YAHARA CROSSING CENTRE are 353 trips ADT which will be added to the current traffic on CTH"M" In the above calculations we must take into account traffic produced by three recent developments adjacent to this site and the existing single family homes on Blue Bill Park Road. How does our shopping and office area impact on the existing and future planed residential units? In this case because of the total absence of shopping in the area such traffic is significant in rnn1