用于交通需求扩展分析的可实现高峰小时负荷：来自电气工程领域和供需紧张分析的新的数据驱动观点.pptx

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1、Realizable peak hour load for travel demand spreading analysis:a new data-driven perspective from the electrical engineering field and tight demand-supplyanalysis,Presented by:Baloka Belezamo,Ph.D.,Arizona Department of TransportationFang(Alicia)Tang,Arizona State University Xuesong(Simon)Zhou,Ph.D.

2、,Arizona State University,Outline and Motivations,Help practitioners understand the differences between peak hour volume,congested demand,and peak load factor commonly in the field of the electrical engineering A rigorous model for quantifying the demand vs.supply relationshipA polynomial arrival ra

3、te model(due to Newell)under the quadratic formulation.Highlight the importance of calibrating Fundamental Diagram using sensor data in travel planning applicationsA basis for an improved methodology for practicalapplication,Standard Static traffic Assignment(STA),Typical volume-delay function Chica

4、go Area Transportation Study(1963):Smock(1963):BPR(1964):Davidson(1966):Spiess(1990):Akcelik(1991):,0:free flow travel time:traffic volume:capacity,:parameters,()=0(1,()=0 1+0.15 4,()=0 1+,=0 2+2 1 2+21 22 2 1 21 22,1,=0+0.25 0 1+1 2+8(0,Many Models Studying Traffic Flow Dynamics,Literature Review(I

5、),Connections between the link performance function and macroscopic traffic flow fundamental diagramMapping traffic observations to assignment periods,congestion periods and peak flow ratesTypically,a peak hour factor(PHF)is used to convert the peak hour traffic volume into the flow rate representin

6、g the busiest 15 minutes of the rush hour in the assignment period(e.g.,AM or PM).Based on speed data,one can determine which hours of traffic surpass capacity,and this hour is typically defined as the peak hour.There are essential differences between congestion duration and heaviest volume hour:all