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Comprehensive Plan <br />Traffic Circulation System <br />Transportation Element <br />The traffic circulation system is the most important part of the county's transportation system. <br />Not only does the traffic circulation system accommodate the vast majority of trips within the <br />county; it also provides access to land uses within the area. <br />According to the 2000 Census, the average commute time for residents of the county was 21.85 <br />minutes. The travel mode of choice in the county is the automobile. As shown in Table 4.5, <br />80% of commute trips consist of single occupancy vehicles. Almost half, 45.9%, of all <br />commutes fall between 10 and 19 minutes. When compared to average journey to work times <br />across the state of Florida, commute times in Indian River County are shorter than most other <br />areas in the state. <br />Inventory and Level -of -Service <br />Figure 4.1.1 shows the current roadway network laneage, while Table 4.7.1 contains a <br />comprehensive listing of all roadway facilities in the county, along with each roadway's laneage, <br />ownership, functional classification, adopted level -of -service and actual level -of -service. For <br />planning purposes, a roadway's capacity and level -of -service (LOS) are generally based on the <br />number of through lanes. <br />While Level of Service (LOS) is a qualitative measure, describing motorists' perceptions of <br />operating conditions within a traffic stream, capacity, on the other hand, is a quantitative <br />measure of the ultimate number of motor vehicles which can travel over a particular roadway <br />segment during a particular time period (either hourly or daily). These conditions are generally <br />described in terms such as speed and travel time, freedom to maneuver, interruptions to traffic <br />flow, comfort and convenience, and safety. As shown on Table 4.7.1, no roadway in <br />unincorporated Indian River County currently exceeds its adopted level -of -service. <br />r pure 4.1.1 <br />Number of Lanes & Road Type I . <br />N <br />Brevard C <br />• Existing Interchanges £`+ <br />NIJ-F LANES <br />o t �z <br />rrtlies St. Lucie County <br />Community Development Department Indian River County 7 <br />