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Kristine Giga, P.E. City of Arden Hills CONCLUSIONS AND RECOMMENDATIONS April 6, 2011 Page 15 Based on the analysis, the following conclusions and recommendations are offered for your consideration: • Results of the existing operations analysis indicate that all key intersections currently operate at an acceptable overall LOS A during the a.m. and p.m. peak hours with existing traffic control and geometric layout. All side- street approaches operate at LOS D or better during the a.m. and p.m. peak hours. Average side- street delays associated with these approaches are generally considered acceptable and do not require mitigation. • The proposed development site, currently vacant, will be converted to a 39 parcel single - family residential development. Two roadway connection/access alternatives were developed. o Alternative 1 provides access to the development via a new roadway between Snelling Avenue and the Arden View Drive /Royal Hills Drive intersection and includes a cul -de- sac near Keithson Drive. o Alternative 2 is similar to Alternative 1 however it includes a connection to Keithson Drive. • Based on existing area growth patterns and historical annual average daily traffic (AADT) volumes, an annual growth rate was applied to the existing turning movement volumes to develop year 2013 background traffic forecasts. o An annual growth rate of two percent was applied to the through movements along County Road 96, while an annual growth rate of one percent was applied to all other turning movement volumes o The proposed development is expected to generate 29 a.m. peak hour trips, 40 p.m. peak hour trips, and 373 daily trips. • Depending on which site plan alternative is ultimately selected, the following neighborhood impacts include: o Arden View Drive and Colleen Avenue will see an increase of approximately 75 vehicles per day (vpd) respectively. This increase assumes Alternative 1 conditions, which represents a worst -case scenario for impacts to these roadways. o Based on Alternative 2 conditions, Keithson Drive will see an increase of approximately 75 to 100 vpd. • Results of the year 2013 Alternative 1 and 2 build operations analysis indicate all key intersections will continue to operate at an acceptable overall LOS A during the a.m. and p.m. peak hours with the existing geometric layout and traffic control. Impacts to side- street delays at the key intersections will be minimal and no queuing issues are expected. • Ensure proper traffic controls are installed at new intersections created as part of the proposed development • Consider providing pedestrian facility connections (sidewalks and/or trails) to existing area sidewalks /trails along County Road 96 and Arden View Drive (east of Keithson Drive) H:\Projects \7417 \TS\Report \110406_7417 DRAFT Pulte Homes_Arden Hills Traffic Study.doc