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I2 CHAPTER l Current Practice and Future Needs
CHAPTER 2 FindingsReview of Practice and Congestion Measures
CHAPTER 3 FindingsTravel Time and Speed Estimates
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acceptable travel rate Actual Travel Rate ADT per lane ADT/Lane altemative analysis areawide arterial class arterial streets Average Speed average travel speed bottleneck calculated coefﬁcient of variation concems Congested Travel congestion levels congestion measures data collection deﬁned deﬁnition Deviation Person-Hours difﬁcult effect Equation evaluation facility ﬂow free-ﬂow freeway gestion Highway Capacity Manual HOV lane identiﬁed improvements lane values level of conﬁdence mean square error measure of congestion minutes per mile modes NCHRP normal distribution operating peak hour percent Person Travel portation prediction interval programs reﬂect relative delay rate relative error Research Root mean square route sample sizes sections signal density signals per mile signiﬁcant speciﬁc standard deviation statistics stratiﬁcation Table 41 techniques Texas Transportation Institute tion Town Avenue trafﬁc volume transit transportation system Travel Rate Minutes/Mile travel time data travel time measures urban areas v/c ratio variability vehicle occupancy Vehicle-Miles Vm/Cm Yes Yes Yes