[1] Chen Qian, Li Wenquan,. Influence range of emergency under special events based on CTM [J]. Journal of Southeast University (English Edition), 2009, 25 (2): 257-261. [doi:10.3969/j.issn.1003-7985.2009.02.024]
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Influence range of emergency under special events based on CTM(
)
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 25
- Issue:
- 2009 2
- Page:
- 257-261
- Research Field:
- Traffic and Transportation Engineering
- Publishing date:
- 2009-06-30
Info
- Title:
- Influence range of emergency under special events based on CTM
- Author(s):
- Chen Qian; Li Wenquan
- School of Transportation, Southeast University, Nanjing 210096, China
- Keywords:
- traffic management; special event; emergency; influence range; cell transmission model(CTM)
- PACS:
- U491
- DOI:
- 10.3969/j.issn.1003-7985.2009.02.024
- Abstract:
- To determine the dynamic influence range of emergencies under special events, the spacial and temporal characteristics of the traffic flow are studied by simulation based on the cell transmission model(CTM).Based on the traffic management measures used under special events, a semi-dynamic assignment algorithm is proposed, which is combined with an algorithm for logit multi-path traffic assignment and the CTM.In a simple calculation network, the spacial and temporal characteristics of traffic flows which vary with different traffic management schemes are studied, and a method to obtain the influence range of emergency is proposed by computing the jam time of the intersections.By contrasting the average delay of each vehicle, the dissipation effect is studied under two different traffic management schemes.The example shows that the spatial and temporal variety of the traffic flow can be easily simulated and the influence range of emergency can be confirmed by the method based on the CTM. The proposed method provides a new idea for decision-making on traffic management under emergency under special events.
References:
[1] Cui Hongjun, Lu Jian, Wei Lianyu, et al.Traffic flow time space dissipation rule under large-scale activity [J].China Journal of Highway and Transport, 2007, 20(2):102-107.(in Chinese)
[2] Daganzo C F.The cell transmission model:a simple dynamic representation of highway traffic consistent with the hydrodynamic theory[J].Transportation Research Part B, 1994, 28(4):269-287.
[3] Lighthill M J, Whitham J B.On kinematic waves.Ⅰ:Flow movement in long rivers; Ⅱ:A theory of traffic flow on long crowded road[J].Proceedings of the Royal Society, Series A, 1955, 229:281-345.
[4] Richards P I.Shockwaves on the highway[J].Operations Research, 1956, 4(1):42-51.
[5] Lian Aiping, Gao Ziyou, Long Jiancheng.A dynamic user optimal assignment problem of link variables based on the cell transmission model[J].Acta Automatic Sinica, 2007, 33(8):852-859.(in Chinese)
[6] Lo H K, Szeto W Y.A cell-based variational inequality formulation of dynamic user optimal assignment problem [J].Transportation Research Part B, 2002, 36(5):421-443.
[7] Yu Bin.Research on influence scope of traffic accident and the manoeuvre of accident handling departments[D].Nanjing:School of Transportation of Southeast University, 2006.(in Chinese)
[8] Fang Kai.Research on the accident treatment in urban street traffic accident emergency assistance system[D].Nanjing:School of Transportation of Southeast University, 2006.(in Chinese)
[9] Shao Chunfu.Theory of transit planning[M].Beijing: China Railway Publishing House, 2004:172-209.(in Chinese)
[10] Kong Huihui, Li Yinzhen.Muti-time dynamic traffic assignment and algorithm[J].Journal of Lanzhou Jiaotong University:Natural Science Edition, 2004, 23(4):122-125.(in Chinese)
Memo
- Memo:
-
Biographies: Chen Qian(1978—), female, doctor, lecturer, seu-chq@163.com;Li Wenquan(1964—), male, doctor, professor, wenqli@seu.edu.cn.
Foundation item: The National High Technology Research and Development Program of China(863 Program)(No.2007AA11Z210).
Citation: Chen Qian, Li Wenquan.Influence range of emergency under special events based on CTM[J].Journal of Southeast University(English Edition), 2009, 25(2):257-261.