| Author | Chiou, Ding-tsai |
| Call Number | AIT Thesis no. 236 |
| Subject(s) | Traffic signs and signals
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in the Asian Institute of Technology, Bangkok, Thailand. |
| Publisher | Asian Institute of Technology |
| Abstract | At a suitable signalized intersection, the starting times of the first through sixth vehicles to enter the intersection after the start of green period were measured. Also, observations were made of vehicles entering the intersection after the beginning of the amber period for each cycle. Data were gathered by photographing the site from a vantage point using a 16-mm cine camera. Review of the photographs permitted the evaluation of the average
minimum time headway, a parameter useful for estimating the capacity of the intersection. In addition, the photographs were used to determine potential vehicular conflicts occurring within the intersection area due to: (1) the presence of early starts; (2) vehicles continuing to enter after the amber period; or (3) a combination of both.
Data were collected at an intersection at which the duration of the red-amber period was 3 sec and G sec, separately. The Student’s t-test and F-test were utilized to test the significant difference between two different conditions.
The effect of the omission of the red-amber phase on the
characteristics of traffic entering the signalized intersection
as capacity, entry time of the first vehicle in the queue, and
potential conflicts occurring within the intersection area
— such — were evaluated. From investigation of the distribution of the entry time for the first vehicle in the queue and for the last vehicle of the opposing road, an improvement of the signal controller for a more efficient operation is suggested. |
| Year | 1969 |
| Type | Thesis |
| School | Student Research Before 1980 |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Thesis (Year <=1979) |
| Chairperson(s) | Drew, Donald R. ; Jones, John Hugh |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 1969 |
