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2008 Mounds View Comprehensive Plan
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<br />
<br />Chapter 6: Transportation 6-21
<br />ithin a traffic stream, generally in terms of such service measures as:
<br />
<br />• Comfort and convenience
<br />For planning purposes, designers use a generalized ADT threshold for roadways. Table 23 below
<br />shows the generalized ADT volume thresholds for a roadway type and number of lanes in terms of
<br />level of service. Level of service (LOS) is a qualitative measure describing operational conditions
<br />w
<br />• Speed and travel time
<br />• Freedom to maneuver
<br />• Traffic interruption
<br />
<br />Table 23: Generalized Average Daily Traffic Volume Thresholds
<br />Maximum ADT Volume at Level of Service1
<br />Facility Type 2A B C D E
<br />2-Lane Roadway -
<br /> 3,000
<br />
<br /> 4,500
<br />
<br /> 6,500
<br />
<br /> 8,500
<br />
<br />10,000 Without Turn Lanes
<br />With R Turn Lanes
<br />With L Turn Lanes3
<br />With L and R Turn Lanes3
<br /> 4,750
<br /> 5,250
<br /> 7,500
<br /> 7,200
<br /> 7,900
<br />11,250
<br />10,300
<br />11,400
<br />16,250
<br />13,500
<br />14,900
<br />21,250
<br />15,900
<br />17,500
<br />25,000
<br />4-Lane Roadway -
<br />Without Turn Lanes
<br />With R Turn Lanes
<br />With L Turn Lanes4
<br />With L and R Turn Lanes4
<br />
<br /> 7,100
<br /> 9,600
<br />10,100
<br />12,600
<br />
<br />10,700
<br />14,400
<br />15,200
<br />18,900
<br />
<br />15,400
<br />20,700
<br />21,900
<br />27,200
<br />
<br />20,100
<br />27,100
<br />28,600
<br />35,600
<br />
<br />23,700
<br />31,900
<br />33,700
<br />41,900
<br />1 ADT Volumes above the LOS E maximum threshold would be considered LOS F.
<br />2 LOS D is usually the lowest acceptable LOS allowed by most agencies within the metro area.
<br />3 Also considered the planning capacity for a 3-lane roadway (one through lane in each direction with a center, two-way
<br />left turn lane) without or with a right turn lane.
<br />4 Also considered the planning capacity for a 5-lane roadway (two through lanes in each direction with a center, two-
<br />way left turn lane) without or with a right turn lane.
<br />• Approximate values based upon several assumptions such as capacity assumptions per lane, directional
<br />orientation, peak hour percentages, and ¼ mile signal spacing.
<br />
<br />
<br />Figure 17 on page 6-22 shows the roadway network and general lane configurations as they were
<br />applied to Table 23 to obtain LOS estimates. Figure 18 on page 6-23 shows the planning LOS values
<br />per road segment based on existing traffic volumes. As shown in that figure, the City expects mo
<br />the road segments to operate at LOS C or better. There is a segment of County Road J to the east of
<br />US Highway 10 that is expected to operate at LOS D. Also, portions of County Road H are operating
<br />at lower levels of service. The segment of County Road H between Long Lake Road and Edgewood
<br />Drive is operating at LOS D. The segment of County Road H between Edgewood Drive and Old
<br />Highway 8 operates at LOS E. The segment of County Road H between Old Highway 8 and County
<br />st of
<br />ighway 10 operates at LOS F. H
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