| Author | Tan, Kim Foo |
| Call Number | AIT Thesis no. GT-90-23 |
| Subject(s) | Traffic flow--Thailand--Bangkok
|
| Note | A thesis submitted in partial fulfillment of the requirements for
the degree of Master of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. GT-90-23 |
| Abstract | Intersection capacity is based on saturation flow rate. In
reality, the saturation flow rate changes considerably on such
road and traffic conditions such as the geometry of intersections
number of right-turn vehicles, number of left-turn vehicles,
number of heavy vehicles in the traffic stream and etc . Therefore,
in principle the saturation flow rate should be determined base on
the actual measurement at the concerned intersections.
In this study , the saturation flow rates of straight- ahead and
unopposed right-turning movements were surveyed. The ef feet of
trucks was also evaluated. Saturation flow rates and PCEs
determined by different methods were then compared. New approach
for PCEs and saturation flow rates were developed and tested.
Theoretically, the PCEs depend on the truck's position in the
queue, but for practical work, the difference can be ignored.
Right turn movement is equivalent to straight-ahead movement
for passenger cars. The average headways of straight- ahead movement
obtained for Phahonyothin - Pradiphat, Ratcahwithi - Rama VI and
Rangsit are 1.91 , 1.86 and 2.16 respectively .
PCE for trucks of right turning is larger than that of
straight- ahead movement . PCEs of straight- ahead movement and right
turn movement obtained in this study for Rangsit intersection were
1.53 and 1.68 respectively . |
| Year | 1991 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. GT-90-23 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Geotechnical and Transportation Engineering (GT) |
| Chairperson(s) | Mori, Hiroshi |
| Examination Committee(s) | Yordphol Tanaboriboon ;Fukuda, Atsushi |
| Scholarship Donor(s) | Asian Development Bank; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1991 |