ADJUSTAfENTFACTORS The County's Concurrency Management System determines Concurrency based on "peak season". Therefore, the estimated 1997-98 peak hour volumes shown in the listing are adjusted to represent the anticipated volumes on each roadway during the peak traffic month ofthe year. A listing of the adjustment factors for State and County roads is given in Appendix C. Weekly Adjustment Factors from FDOT were used to convert raw counts to Estimated ADT and Estimated Peak Month Volume Factors for the County and State Roads (See Appendix C, pages 39-41). Traffic counts are also adjusted using an "axle factor" which corrects for the fact that trucks have more axles which cause traffic counters to register them as multiple vehicles; e.g., 4 axle truck registers as two 2 axle vehicles (See Appendix C, pages 42-43). Latest FDOT Adjustment Factors will be used. For County roadways an operational LOS D (peak hour, peak season) shall be maintained on all roadways in urbanized areas and arterial roads in Transitioning arterial areas. An operational LOS C (peak hour, peak season) shall be maintained on all collector roadways in rural and transitional areas. For State roads an operational LOS D peak hour is maintained on all roadways in urbanized areas. Not included is the Florida Intra State Highway System (FIHS). Transitioning areas have a LOS C standard; rural areas has a LOS B standard, except for 2 lane roads which have a LOS C standard. In some cases the general Level ofService standard is superseded by the "maximum vic" for Concurrency management purposes. (See Maximum VIC above). Supplemental Information - The LOS Inventory and the supporting software for the tables can provide two levels of information: (1) the Level ofService for each link on the roadway being examined, and (2) the overall Level of Service (based on
travel speed) for the length ofroadway examined. Overall Level of Service is used to determine whether roadway infrastructure is sufficient to accommodate new development. The reason for this is that while one link or intersection may cause excessive delays, the overall roadway operates at an acceptable Level of Service, meaning that overall travel speed and delay are at levels acceptable to the traveling public. PLEASE NOTE: Updated traffic counts and measurement of capacity may also be determined by substantiation in the form of engineering studies signed by a licensed Professional Engineer. Traffic analysis techniques must be technically sound and justifiable as determined by the Planning and Growth Management Department. Utilization of acceptable traffic data collection methods, should include but not limited to, 3 day counts adjusted to the lOOth highest, must be included as part ofthe methodology. ACKNOWLEDGMENT The information on the following pages was compiled by Hillsborough County's Planning and Growth Management Department. This has been a cooperative effort with the Metropolitan Planning Organization and was accomplished with continued support from Hillsborough County's Public Works Department, and the Florida Department of Transportation, District 7. Many thanks to all those in the public and private sectors who also contributed their time and expertise. This report was prepared in conjunction with Tindale Oliver & Associates, the developer of the Traffic Information Management and Analysis System (TIMAS).
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