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Debra Bloom, P.E.
<br />City of Roseville!
<br />Attachment C
<br />February 22, 2011
<br />Page! 4
<br />An operations, analys,is, was conducted for the a.m. and p.m. peak hours, at each of the key
<br />intersections, to determine how traffic currently operates, in the study area. The key intersections,
<br />were analyzed using a combination of the Highway Capacity Manual (HCM) and
<br />Synchro/SimTraffic software! (version 7).
<br />Capacity analys,is, results, identify a Level of Service! (LOS), which indicates, how well an
<br />intersection is operating. The LOS results, are based on average! delay per vehicle!. Intersections,
<br />are given a ranking from LOS A through LOS F'. LOS A indicates, the best traffic operation and
<br />LOS F'indicate!s, an intersection where ! demand exceeds, capacity. In the Twin Cities, metropolitan
<br />area, LOS A through D is generally considered acceptable by drivers,. For s,ide!-s,tre!e!t stop
<br />controlled intersections,, special e!mphas,is, is given to providing an estimate for the level of
<br />service of the minor approach. Traffic operations, at unsignalized intersections, with s,ide!-s,tre!e!t
<br />stop control can he described in two ways,. First, cons,ide!ration is given to the overall intersection
<br />level of service!. This takes, into account the total number of vehicles, entering the intersection and
<br />the capability of the intersection to support those! volumes,. Second, it is important to consider the
<br />delay on the minor approach. Since the mainline ! does, not have to stop, the majority of delay is
<br />attributed to the s,ide!-s,tre!e!t approaches, in most cases,.
<br />Results, of the existing operations, analys,is, shown in Table! I indicate! that all key intersections,
<br />currently operate at an acceptable! overall LOS A during the a.m. and p.m. peak hours, with
<br />existing traffic control and geometric layout. All s,ide!-s,tre!e!t delays, are cons,ide!re!d acceptable and
<br />do not require mitigation.
<br />Table 1
<br />Existing Peak Hour Capacity Analysil
<br />Level of Service Results
<br />Intersection
<br />Level of Service
<br />A.M. Peak I P.M. Peak
<br />Lexington Avenue North and County Road C2
<br />Lexington Avenue North and Josephine Road
<br />Josephine Road and. Fernwood Street *
<br />Josephine Road and. Hanifine Avenue North
<br />Hanifine Avenue North and County Road. C2
<br />Indicates an unsignalized. intersection with side-street stop control. The overall LOS is shown
<br />followed, by the worst approach LOS.
<br />The proposed residential development is bounded by Josephine! Road to the north, County Road
<br />C2 to the south, Lexington Avenue to the east, and Fle!rnwood Street to the west. The
<br />development site, currently vacant, will he converted to a 28-unit single-family residential
<br />development. Access, to the development will he provided via new roadways, that will connect
<br />with County Road C2 to the east and Fernwood Street to the west. It should he noted that there !
<br />are approximately five homes, that will have driveways, located along County Road C2. The
<br />proposed development site plan is shown in Figure 3.
<br />Page 4 of 11
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