| Author | Lee, Thay-ming |
| Call Number | AIT Thesis no.GT- 79-39 |
| Subject(s) | Roads--Interchanges and intersections
|
| Note | A thesis submitted in partial fulfilment of the requirements for the degree of Master of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Abstract | The study dealt with the determination of the characteristics of traffic diverging onto the six exit ramps of three diamond interchanges in the vicinity of Bangkok. A photographic technique, augmented by an electronic timer, was used to collect the field data. The study was conducted at six sites with two-lane exits and two lanes provided for straight-through traffic. It was found that the
lowest total erratic maneuver rate for all the study sites was 2.4 percent, and the highest was 16.5 percent. More than 80 percent of the erratic maneuvers were committed by exiting traffic. The main type of erratic maneuver, exiting from the inner (median) lane, which was
identified as a lane change erratic maneuver, constituted more than 80 percent of the total erratic maneuvers. The exiting speed measured at the beginning of the taper indicated that vehicles exiting from the
inner lane made high speeds and potentially dangerous movement across the slower moving outer lane of traffic. Vehicles exiting from the outer lane displayed decreased speeds on the main lane before turning
onto the off-ramp. |
| Year | 1980 |
| Type | Thesis |
| School | School of Engineering and Technology |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Geotechnical and Transportation Engineering (GT) |
| Chairperson(s) | Jones, John Hugh |
| Examination Committee(s) | Marler, N.W. ; Nagaraja, H.N.
|
| Scholarship Donor(s) | Carl Duisberg Gesellschaft, e. V. |
| Degree | Thesis (M. Eng.) - Asian Institute of technology, 1980 |