The effect of traffic on vehicle emissions in Bangkok | |
| Author | Parinya Tanadtang |
| Call Number | AIT RSPR no. TE-98-02 |
| Subject(s) | Traffic congestion--Thailand--Bangkok Automobiles--Motors--Exhaust gas |
| Note | A research proposal submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Civil Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | The importance of traffic to air quality through driving cycle tests are useful in estimating the standard settings of vehicle emissions control, planning and monitoring the atmospheric air quality in Bangkok. This research concerns about the effect of traffic to air quality through driving cycle tests by measuring and evaluating the exhaust emissions of gasoline-power vehicles in the congested and non-congested roads, suburban roads and expressway in Bangkok. Through driving cycle tests, the movement of vehicles were classified as idling, cruising, acceleration and deceleration speeds. Idling condition has the most severe impact on air quality in terms of carbon monoxide (CO) emission. Hence, the results of driving cycle tests analysis of carbon monoxide were derived from driving cycle, distance per cycle and the associated CO emission levels at various cruising speeds. Results from this research were presented by the total CO discharged expressed in gram per kilometer of distance traveled. Motor vehicle's emission standards were presented and compared with the total carbon monoxide discharged between Thailand and other countries. The SILOM road is one of the most congested roads in Bangkok and that is also developed from the low average speed and high idling trends observed on this road. The higher percentage of idling condition means the longer duration of stopping or stand-still condition along the street. The PRACHA CHUN road situated in the suburban area, was found not so congested both during weekdays and weekend. Furthermore, comparing the idle conditions between peak and off-peak periods as well as weekdays and weekends, it can be clearly seen that peak hour's traffic had the highest percentages of idling time as compared with off-peak traffic and weekend's traffic. Expressway has the longest driving cycle, highest average speed but least total CO discharged. There is very high percentage of cruising time because less interruption from vehicles resulted to continue movement of traffic. Therefore, the higher the average speed, the lower is the total CO discharged emission. |
| Year | 1999 |
| Type | Research Study Project Report (RSPR) |
| School | School of Civil Engineering |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Transportation Engineering (TE) |
| Chairperson(s) | Yordphol Tanaboriboon; |
| Examination Committee(s) | Nakatsuji, Takashi ;Pannapa Herabat; |
| Scholarship Donor(s) | Asian Institute of Technology Partial Scholarship; |
| Degree | Research Studies Project Report (M.Eng.) - Asian Institute of Technology, 1999 |