TY - GEN
T1 - Application of the Weibull function on processing traffic flow data
AU - Ci, Yusheng
AU - Wu, Lina
AU - Pei, Yulong
PY - 2008
Y1 - 2008
N2 - Headway and speed distribution models were set up for traffic flow about on-ramp junctions of urban expressway, which was based on the analysis of subsistent distribution models and Weibull distribution function. Additionally, the graphic method and analytic method of calibrating the parameters were discussed. It was found that the graphic method could be used to calibrate a two-parameter speed Weibull distribution model and the analytic method for three-parameter Weibull distribution model of vehicles' headway directly. Finally, the models were validated with collected on-ramp junction traffic flow data in the GUANGZHOU urban expressway, and the results showed that Weibull distribution functions can describe traffic flow distribution regularity suitably, especially for the use of traffic flow with high density much better than Erlang distribution and Normal distribution.
AB - Headway and speed distribution models were set up for traffic flow about on-ramp junctions of urban expressway, which was based on the analysis of subsistent distribution models and Weibull distribution function. Additionally, the graphic method and analytic method of calibrating the parameters were discussed. It was found that the graphic method could be used to calibrate a two-parameter speed Weibull distribution model and the analytic method for three-parameter Weibull distribution model of vehicles' headway directly. Finally, the models were validated with collected on-ramp junction traffic flow data in the GUANGZHOU urban expressway, and the results showed that Weibull distribution functions can describe traffic flow distribution regularity suitably, especially for the use of traffic flow with high density much better than Erlang distribution and Normal distribution.
UR - https://www.scopus.com/pages/publications/70349241474
U2 - 10.1061/40995(322)81
DO - 10.1061/40995(322)81
M3 - 会议稿件
AN - SCOPUS:70349241474
SN - 9780784409954
T3 - Proceedings of the Conference on Traffic and Transportation Studies, ICTTS
SP - 862
EP - 869
BT - Proceedings of the 6th International Conference on Traffic and Transportation Studies Congress 2008
PB - ASCE - American Society of Civil Engineers
T2 - 6th International Conference on Traffic and Transportation Studies Congress 2008: Traffic and Transportation Studies Congress 2008, ICTTS 2008
Y2 - 5 August 2008 through 7 August 2008
ER -