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Comprehensive Plan Transportation Element Since this decision, subsequent analysis determined that a four-lane section (as opposed to the original five-lanes) on these roadways would enable the county to maintain its LOS "D" standard while minimizing the impacts to surrounding properties. Consequently, both 27th and 43rd Avenues have been added to the county' s roadway network as future four-lane divided facilities . Therefore, level of service "E+20%" can be chanced back to level of service "D" when these roads are in the first three years of the county' s capital improvement program. ° Intersection Analysis Based on the results of the model run produced as a part of the Needs Analysis, corridors with v/c ratios in the range of 0 .98 and 1 .2 were identified for additional intersection analysis . Since signals are almost always the constraint points in urban area corridors, the intersection analysis of these corridors began with an analysis of peak hour operating conditions at these signals. Signal layout information, signal timing information, and P .M. peak hour turning movement counts were obtained from the Indian River County traffic engineering division to complete the analysis. Seasonal factors and growth factors were then applied to project growth rates for each intersection through the planning horizon of the plan. The results of the analysis indicate that three signalized intersections are projected to operate at unacceptable levels of service. These three locations are : • 43'd Avenue & SR 60 • US 1 & 32nd Street (Aviation Way) • CR 510 & 66th Avenue In addition to level of service, the County should also consider safety when prioritizing intersection improvements . Together with the intersections listed above, the county should include other intersections as candidates for improvements based on the annual crash data collected. Crash data for 2001 are listed on Table 4. 2 . ° Access Management & Traffic Control In order to preserve traffic capacity on major arterial roadways, traffic control and access management measures outlined by the Florida Department of Transportation and the Indian River County Land Development Regulations need to be closely adhered to . SR 60, US 1 , and SR AIA have experienced carrying capacity deficiencies from the profusion of side friction by vehicles entering and exiting from the multiple driveways along each road. Deficiencies in these roadways exist because existing development is exempt from the access management standards found in the land development regulations. Review of on-site traffic flows, access driveways, and new roadway connections should continue to be conducted during the site plan and subdivision approval process. The County' s land development regulations provide the basis for these reviews. The land development regulations outline guidelines for minimum parking requirements, adequate storage bays , spacing and design Community Development Department Indian River County 78