| Author | Anan Soontornsiri |
| Call Number | AIT Thesis no. 115 |
| Subject(s) | Traffic flow
|
| Note | A thesis submitted in partial fulfillment if the requirements for the degree of Master of Engineering in the SEATO Graduate School of Engineering, Bangkok, Thailand. |
| Publisher | Asian Institute of Technology |
| Abstract | The study has been conducted on the behavior of following cars when the leading car is released from a queue of vehicles that had been stopped at a signalized intersection. Data were collected by inserting an instrumented test car into the traffic stream and observing the manner in which the following car responded when the queue began to move as the signal turned green.
Car-following theory was introduced to describe and analyze this behavior. One form of the theory states that the acceleration at time (t + T) of a car attempting to follow a leading car is directly proportional to the relative speed of the two vehicles and inversely proportional to their spacing. The validity of this model was tested for selected portions of the stimulus–time and response–time curves, and the correlation coefficients for these portions were found to be high.
The time lag (T) for each run was obtained by two computational methods using the IBM-1620 computer. After allowing for an appropriate time lag, the response of the driver of the following car was found to correlate reasonably well with the stimulus term (V₀ – Vᵣ)/C provided by car-following theory.
The relationship between af(t) and (af – ap(t)) was tested by fitting a least-squares regression line to each run and to the pooled data. Evaluation of the correlation coefficients and F-tests was performed to assess model validity. A linear relationship between af(t) and (af – ap(t)) was generally acceptable, except where boundary conditions |
| Year | 1965 |
| Type | Thesis |
| School | Student Research Before 1979 |
| Department | Department of Water Resources and Environmental Engineering (DWREE) |
| Academic Program/FoS | Thesis (Year <=1979) |
| Chairperson(s) | Prof. John Hugh Jones; |
| Examination Committee(s) | Prof. F. S. Michelin;Dr. Boonserm Weesakul;Dean Milton E. Bender, Jr. |
| Degree | Thesis (M.Eng.) - SEATO Graduate School of Engineering |