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LEVELS OF SERVICE AND VOLUNE-TO-CAPACITY RATIOS <br /> <br /> LEVEL <br />OF <br />SERVICE <br /> <br />DESCRIPTION <br /> <br />V/C RAl'i(3 <br /> <br />A <br /> <br />B <br /> <br />D <br /> <br />F <br /> <br />Source: <br /> <br />Free flow (relatively). If signalized, conditions <br />are such that no approach phase is fully utilized <br />by traffic and no vehicle waits through more than <br />one red indtcatlon. Very slight or no delay. <br /> <br />Stable flow. tt signalized, an occasional approach <br />phase ls fully utilized; vehicle platoons are <br />formed. This level ls suitable operation for rural <br />design purposes. Slight delay. <br /> <br />Stable flow or operation. If signalized, drivers <br />occasionally may have to wait through more than one <br />red indication. Thls level is suitable operation <br />for urban deslgn purposes. Acceptable delay. <br /> <br />Approaching unstable flow or operation; queues <br />develop, but are quickly cleared. Tolerable delay. <br /> <br />Unstable flow or operation; the intersection has <br />reached ultimate capacity; this condition ls not <br />uncommon in peak hours. Congestion and intolerable <br />delay. <br /> <br />Forced flow .or operation. <br />below capacity. Jammed. <br /> <br />intersection operates <br /> <br />~ighway Capacity Manual, HRB Special Report 87 <br /> <br />0.00 - C}~dj <br /> <br />0.61 - 0.70 <br /> <br />0.'71 - 0..~0 <br /> <br />0.81 - 0.90 <br /> <br />0.91 - 1.00 <br /> <br />1.00+ <br /> <br />EXHIBIT F <br /> <br /> <br />