Comparison between static and dynamic assignment models in quantifying pollution emission in a large-scale network | |
| Author | Yada Khurukul |
| Call Number | AIT Thesis no.TE-17-04 |
| Subject(s) | Traffic assignment--Computer simulation Traffic flow Electronic traffic controls |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Transportation Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | Traffic Assignment is a key element for transportation planning section since the result from Traffic Assignment model can be used to evaluate the future planning scheme to improve traffic efficiency in such an economic analysis. Static Traffic Assignment model is normally used but its limitation that the models treat both the network capacity and Origin-Destination (O-D) demands as unvarying and fixed over a given time period. When the travel demand exceeds road capacity or the congestion on the road is not continuous, the Static Traffic Assignment models are complained for being incapable to handle these both conditions and for insufficient representation of the maximized utility feature. Therefore, Dynamic Traffic Assignment model which is a function in the TransCAD application is suggested to use in this research since its capability for predicting timevarying of traffic conditions in road networks, and the traffic demand in term of O-D matrix can change through time. The result from this assignment can verify more realistic traffic situation and more effectively capture the temporal distribution of the network congestion than the result from the Static model because many details will be calculated and separated in term of time intervals. The more details of the result which vary by a time of day will be helpful for the transportation planning section. For instance, vehicle mile traveled (VMT) or vehicle kilometer traveled (VKT) result are used to mainly as a database for allocating resources for maintenance and improvement of highways. Volume over Capacity (VOC) can be used to analyze which time of day is congested which can be used to improve traffic efficiency in the future planning scheme. Moreover, the pollution emission is more concern in the land transportation. This study likewise exhibits the amount of pollution in term of composite emission factors which include HC, CO, and NOx that emit in a day in gram per day within the study area by using MOBILE6 emission model which is also a function in the TransCAD application. |
| Year | 2018 |
| Type | Thesis |
| School | School of Engineering and Technology |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Transportation Engineering (TE) |
| Chairperson(s) | Surachet Pravinvongvuth; |
| Examination Committee(s) | Nakatsuji, Takashi;Kunnawee Kanitpong; |
| Scholarship Donor(s) | Royal Thai Government Fellowship; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2018 |