Disequilibrium adjustment mechanism for urban resident travel markets(PDF)
长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]
- Issue:
- 2016年06期
- Page:
- 105-110
- Research Field:
- 交通工程
- Publishing date:
Info
- Title:
- Disequilibrium adjustment mechanism for urban resident travel markets
- Author(s):
- HUANG Zhong-xiang; CAI Jian-rong; WU Li-xuan
- School of Traffic and Transportation Engineering, Changsha University of Science & Technology, Changsha 410114, Hunan, China
- Keywords:
- traffic engineering; disequilibrium; travel market; travel behavior; price-quantity adjustment; adjustment mechanism
- PACS:
- U491.2
- DOI:
- -
- Abstract:
- To achieve the equilibrium state between traffic demand and supply on the condition that the demand and supply in traffic do not fluctuate greatly and moderators do not experience large changes, and to solve the current common disequilibrium problem in traffic demand and supply, the road network system was considered as an economic system, and the urban residents travel market was established based on the definitions of travel demand-side and supply-side. In the travel market, the definitions of travel demand function and travel supply function were proposed based on OD pair. Different from the traditional situation where the demand and supply functions have different manipulated variables, the defined functions shared the common price manipulated variable. Based on the disequilibrium theory of economics that only through the adjustments of both price and quantity, the relationship between demand and supply could tend to an equilibrium state, the impacts of both price and quantity on traffic demand and supply were taken into consideration, and a more realistic disequilibrium travel market model was built. The adjustment mechanism of price and quantity as collective adjustment variables to the relationship between demand and supply of disequilibrium travel market was analyzed by using the dynamic programming method, the optimal adjustment laws were concluded and the effects of different optimal adjustment laws on traffic demand and supply were demonstrated. The results show that the same price and quantity adjustment variables are used in both the demand and supply functions in the disequilibrium travel market model, so the regulating effect of price and quantity on the relationship of traffic demand and supply can be investigated in the same coordinate system. The single optimal adjustments of price or quantity are both the special case of the optimal price-quantity adjustment in the extreme situations. Compared to the single optimal price adjustment or the single optimal quantity adjustment, the optimal price-quantity adjustment can truly adjust the traffic demand and supply to achieve equilibrium state.
Last Update: 2016-12-02