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2007_0820_Packet
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2007_0820_Packet
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1/10/2012 12:41:30 PM
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Roseville City Council
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Council Agenda/Packets
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, <br />� <br />S <br />t� <br />� <br />� <br />9 <br />[�l <br />LL <br />�� <br />�3 <br />I� <br />]� <br />Lfi <br />]� <br />!� <br />1� <br />��Ek <br />=1 <br />�� <br />�3 <br />� <br />�� <br />w� <br />� <br />�� <br />iY <br />�� <br />;� D <br />3] <br />-�� <br />, -, <br />a� <br />3� <br />�5 <br />3�, <br />3� <br />38 <br />�� <br />��r <br />Debra Bloom, P.E. <br />City of Roseville <br />CONCLUSIONS AND RECOMMENDATIONS <br />The following conclusions and recommendationsare offered for consideration. <br />July 18,2007 <br />Page 9 <br />�► All key intersections currently operate at an acceptable overall LOS A or better during <br />each of the peak hour time periods, with existing traffic controls and geometric layout. <br />The corresponding a�erage side-street delay reported was less than 20 seconds per <br />vehicle. Under Alternative 2 and 3 conditions, all key intersections will continue to <br />operate at an acceptable overall LOS A or better during each of the peak hour time <br />periods, with the respective traffic controls and e�sting geometric layout. <br />o The improvements do not appear to have a significant impact at the key intersections. <br />However, the improvements do provide safe access for residents, businesses, and <br />customers accessing �'airvi�w Avenue via Oa�CCrest Avenue. The installation of a <br />traffic signal at the Fairview AvenuelOal�crest Avenue (West) intersection will create <br />more gaps for the east approach of Oakcrest Avenue and Rose Place, improving their <br />access to �airview Avenue. By installing traffic signals at both the east and west <br />approaches of Oalccrest Avenue, Alternative 3 creates a safer condition for accessing <br />Fairviev,r Avenue, providing protected movements to all users of Oakcresi Avenue. <br />Vehicles using Rose Place will continue to benefit due to gaps created by the signal at <br />the west approach of Oakcr�st Avenue. <br />o The traffic signal under Alternative 3 was modeled with split phase traffic control. <br />Split phase traffic control indicates that two phases at the intersection, that could <br />otherwise run simultaneously, are run individually. This either provides additional <br />protection for a particular movement or reduces the vehicular conflicts. This traffic <br />control method may result in longer queues andlor delays. Providing this type of <br />traffic control will ensure that the driveway access points located east of Fazrvi��v <br />Avenue will have the opportunity for safe and efficient ingress/egr�ss. <br />o It should be noted that the installation of a traffic signal will increase the potential for <br />rear-end collisions along Fairoiernr Avenue, and potentially result in an increase in <br />right-angle collisions due to vehicles along Fairview Avenue not complying with the <br />traffic signal. <br />• The overall corridor operations were reviewed to determine t�e impact Alternatives 2 <br />and 3 will ha�e on corridor mobility (tra�el time con�parison}. Analysis results indicate <br />that Alternative 2 will increase travel times along �'airvi�w Avenue an additional five <br />seconds during the p.m. peak hour (worst case peak period). Alternative 3 will increase <br />travel times along Fai;rview Avenue an additional 20 seconds during the p.m. peak hour <br />(worst case peak period). It should be noted that the baseline travel time under <br />Alternative 1 conditions (existing traffic control) was modeled to be approximately 145 <br />seconds during the p.m. peak hour. <br />
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