| Author | Mi Thanda Mon |
| Call Number | AIT Thesis no. TE-98-7 |
| Subject(s) | Traffic flow--Simulation methods
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering. |
| Publisher | Asian Institute of Technology |
| Abstract | Traffic simulation techniques are standard tools to analyze complex traffic networks. The microscopic simulation approach to give the complete information about the state of individual vehicles in a network over time and space. This approach is too complex to apply to a large road network due to large amount of input data and computational time. Simulation with macroscopic approach produces traffic variables for large network with short running time. Macroscopic model cannot produce outputs of the state of individual vehicles. Hybrid model, the new approach being developed here, combines the advantages of microscopic and macroscopic models to produce the information about the state of individual vehicles. In this study, a hybrid model for urban networks is developed modifying DYNEMO model, a hybrid simulation model of freeways. The model is developed with necessary modification inherent to urban road networks because the traffic flow in urban area is complex and different from freeways. The outputs of hybrid model are expressed by the traffic variables of single road section and intersection under a certain traffic control scheme. Speed and position of the individual vehicles are estimated from the space mean speed, which varies within speed limits and the desired speed. Speed-density relationship and the distribution of free flow speeds are influential inputs to the model. Measurement of effectiveness such as queue length and traveled time are also considered. The hybrid model is compared with TRAF-NETSIM microscopic simulation package for light and moderate traffic conditions and the outputs are reasonably accurate. |
| Year | 1998 |
| Type | Thesis |
| School | School of Engineering and Technology |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Transportation Engineering (TE) |
| Chairperson(s) | Takashi Nakatsuji; |
| Examination Committee(s) | Yordphol Tanaboriboon;Pannapa Herabat; |
| Scholarship Donor(s) | Asian Development Bank of Japan; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1998 |