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_ Traffic- Impact Report 2 Q <br /> February 24,. 1986. <br /> Page Six <br /> _ <br /> - I <br /> Appendix ••A" <br /> Operating Conditions for- Levels o£ Service <br /> Level of Service A: This is a` condition of free flow, <br /> accompanied by low volumes and: high speeds. <br /> Level of Service- 9: This occurs in the zone of stable flow, <br /> with operating speeds beginning to be restricted somewhat by <br /> traffic. conditions.. <br /> Level of Service C: This is. still in the zone of stable flow, <br /> but speeds and maneuverability are more closely controlled. by <br /> the higher volumes. <br /> - Level of Service D:: This. level of service approaches unstable <br /> flow, with tolerable operating speeds being maintained, though. <br /> considerably affected by changes in operating conditions. <br /> Level of Service E: This cannot be described by speed alone, <br /> but represents operations. at lower operating speeds, typically, <br /> but not always, Lit the-neighborhood .of 30 miles per hour-,, with <br /> volumes- at or near capacity of the highway. - <br /> Level of Service F: This describes- a forced-flow operation at <br /> low speeds,. where volumes are below capacity. In the extreme, <br /> both: speed and volume can drop to zero. <br /> • <br /> a •L l <br /> it <br /> II <br /> II <br />