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• Historical traffic volumes have been collected from MnDOT's traffic flow maps for the period between 1980 and 2005. Historical growth rates were projected to 2030 along a linear trendline to determine the 2030 traffic volumes. For instances where the trendlines indicated a historical decrease, it was assumed that no growth would occur and the 2005 ADT would remain the same through 2030. See Figure 2 for the existing and 2030 traffic volumes on collector and arterial roadways. Most roadways are expected to experience minimal growth in the City with the exception of Snelling Avenue, which, as a regional facility, is expected to experience the greatest amount of growth. Future roadway capacity deficiencies have been identified based upon the future daily traffic forecast. The existing numbers of through lanes on the collector and arterial roadways are also displayed in Figure 14 as well as the number of through lanes anticipated to serve future demands. The existing roadway network should serve the 2030 traffic volumes with the exception of Snelling Avenue. Options for increasing capacity will need to be evaluated in light of proposed 2030 traffic volumes along Snelling Avenue. (For discussion of Traffic Analysis Zones in Falcon Heights, please see pages I-14 to I-16. in the Forecasts section.) • Access Management The primary goal of managing access locations in any corridor is to improve safety and flow. Different roads serve different purposes. Arterials provide movement for through traffic. Local roads provide access to local land uses. Conflict occurs when a roadway is forced to perform unintended functions. A local street that serves too much through traffic creates issues for the neighborhood it serves. Conversely an arterial roadway that serves too much local access creates safety and flow issues for the through traffic. Therefore, guidelines have been established for access spacing for each type of facility. See the table below which highlights access management guidelines. According to MnDOT, Snelling Avenue is categorized as an Urban Core Minor Arterial south of Larpenteur Avenue. The urban core designation recognizes that the arterial roadway traverses through a mature portion of the local street system where existing block lengths and land uses have established a more frequent access condition. North of Larpenteur Avenue, Snelling Avenue is categorized as an Urban Minor Arterial. The recommended access spacing for these types of arterials, and also the other types of roadways in the City, are described in Table 1 below. Falcon Heights Comprehensive Plan 2008 Draft -January, 2008 Part III: Infrastructure, Page III-5