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traffic should be discouraged from using local roads by
<br />using an appropriate combination of geometric designs,
<br />traffic control devices, and policies.
<br />Existing (2006) Capacity Analysis
<br />In general, the capacity of a roadway is a measure of
<br />its ability to accommodate a certain volume of moving
<br />vehicles. Segment level of service (LOS) refers to a
<br />quantitative comparison between an existing traffic
<br />volume and the maximum volume of traffic the roadway
<br />can accommodate in its present configuration. It should
<br />be noted that this level of analysis, typically referred to
<br />as a Planning Level Analysis, is not detailed intersection
<br />or site-specific analysis, and does not replace the need
<br />for a delay -based analysis, typically referred to as an
<br />Operations Analysis, to evaluate specific developments
<br />within smaller geographic areas. For clarification, each
<br />of these types of analyses is described in the following
<br />paragraphs.
<br />Planning Level of Service
<br />For the purpose of this study, a planning level of service
<br />(LOS) was used. Planning level of service compares
<br />volume -to -capacity (v/c) ratios, which correlate to a
<br />LOS letter grade. Using a capacity threshold equivalent
<br />to the D/E boundary, per MnDOT guidelines, provides
<br />an indication of whether a roadway is operating with
<br />excess capacity, at capacity, or over capacity. When the
<br />v/c ratio is below 1.00, the roadway is considered to be
<br />operating at an acceptable LOS. When the roadway is
<br />operating at or above 1.00, the roadway is considered to
<br />be operating at capacity or over capacity. the more the
<br />v/c ratio exceeds 1.00, the greater the traffic congestion.
<br />Table 5.8 contains a summary of generalized traffic
<br />thresholds for specific roadway types, LOS, and number
<br />2030 Comprehensive Plan
<br />FacilityType
<br />Interstate 7 Freeway
<br />Number of
<br />Lanes
<br />8
<br />A
<br />46,000
<br />Level of
<br />73,000
<br />109,000
<br />• • rr•
<br />Approaching
<br />Capacity
<br />140,000
<br />r
<br />At -Capacity Over
<br />170,000
<br />-Capacity
<br />> 170,000
<br />6
<br />34,000
<br />55,000
<br />82,000
<br />105,000
<br />127,000
<br />> 127,000
<br />4
<br />17,000
<br />37,000
<br />55,000
<br />70,000
<br />85,000
<br />>85,000
<br />Divided Arterial 7 Expressway
<br />6
<br />22,000
<br />35,000
<br />56,000
<br />63,000
<br />70,000
<br />>70,000
<br />4
<br />15,000
<br />23,000 37,000
<br />42,000 47,000
<br />>47,000
<br />Divided Minor Arterial
<br />6
<br />18,000
<br />28,000
<br />42,000
<br />51,000
<br />59,000
<br />>59,000
<br />5
<br />16,000
<br />25,000 40,000
<br />45,000 50,000
<br />>50,000
<br />4
<br />12,000
<br />19,000
<br />30,000
<br />36,000
<br />42,000
<br />>42,000
<br />3
<br />8,000
<br />13,000
<br />20,000
<br />27,000
<br />34,000
<br />>34,000
<br />2
<br />5,000
<br />8,000
<br />12,000
<br />18,000
<br />24,000
<br />>24,000
<br />2(one-way)
<br />6,000
<br />10,000
<br />16,000
<br />19,000
<br />25,000
<br />>25,000
<br />Undivided Minor Arterial
<br />6
<br />17,000
<br />27,000
<br />40,000
<br />49,000
<br />57,000
<br />>57,000
<br />5
<br />15,000
<br />24,000 38,000
<br />43,000 47,000
<br />>47,000
<br />4
<br />11,000
<br />18,000
<br />28,000
<br />34,000
<br />40,000
<br />>40,000
<br />3
<br />7,000
<br />12,000
<br />19,000
<br />26,000
<br />32,000
<br />>32,000
<br />2
<br />4,000
<br />7,000
<br />11,000
<br />17,000
<br />23,000
<br />>23,000
<br />2(one-way)
<br />1 6,000
<br />1 9,000 1
<br />15,000
<br />1 18,000 1
<br />24,000
<br />>24,000
<br />Collector
<br />4
<br />7,000
<br />11,000
<br />18,000
<br />22,000
<br />26,000
<br />>26,000
<br />3
<br />5,0008,000
<br />12,000
<br />17,000
<br />21,000
<br />>21,000
<br />2
<br />3,000
<br />5,000
<br />7,000
<br />11,000
<br />15,000
<br />>15,000
<br />2(one-way)
<br />4,000
<br />6,000
<br />9,000
<br />12,000
<br />16,000
<br />>16,000
<br />SOURCE: Highway Capacity Manual, Twin Cities Regional Travel Demand Model, and WSB &Associates, Inc.
<br />Generalized Average Daily Traffic Thresholds
<br />Table
<br />5.8
<br />Adopted: October 26, 2009
<br />Transportation I 5-13
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