Status : Verified
| Personal Name | Paranga, Norbert Anthony Gerome C. |
|---|---|
| Resource Title | Every breath you take: Measuring traffic-related air pollution (TRAP) exposure at intersections under elevated structures in Metro Manila |
| Date Issued | 10 July 2024 |
| Abstract | Metro Manila’s Road network comprises more than two hundred major road intersections, with more than a third being under elevated structures (flyovers, bridges, etc.). With vehicles idling, accelerating, and decelerating, traffic-related air pollution can be thrice as high at intersections. This makes intersections a hotspot for urban air pollution, a main health concern for commuter groups. This study examines the effect of elevated structures (e.g., flyovers, bridges, and rail stations) as covers and barriers to the TRAP exposure rate of pedestrians, bicycle lane users, and public utility vehicle (PUB, PUJ, and UVE) commuters at six (6) intersections in Metro Manila. The study implemented air dispersion modeling using US EPA’s AERMOD to estimate TRAP concentrations. The results showed that there were higher TRAP concentrations at intersections with full (35.94 ug/min ± 20 ug/min, 95%CL) and partial cover (34.26 ug/min ± 30.14 ug/min, 95%CL) than those intersections without cover (14.70 ug/min ± 5.35 ug/min, 95%CL). In terms of time variability, average TRAP concentrations for intersections with full cover were higher three hours after rush hours (classified as post-rush hours) (48.18 ug/min ± 22 ug/min 95%CL) compared to off-peak hours (25.97 ± 12.91 ug/min, 95%CL) and rush hours (31.17 ± 18.39 ug/min, 95%CL). On the other hand, average TRAP concentrations for intersections with partial cover were higher during rush hours (45.63 ± 26.66 ug/min, 95%CL) than post-rush hours (28.06 ± 12.40 ug/min, 95%CL) and off-peak hours (31.12 ± 16.43 ug/min, 95%CL). Last, average TRAP concentrations for intersections without cover have no significant peaking time. The higher average TRAP concentrations at intersections with cover were attributed to the lower wind speeds (0.83 m/s ± 0.36 m/s, 95%CL) recorded compared to intersections with no cover (1.43 m/s ± 0.21 m/s, 95%CL). The study hypothesizes that the elevated structures at these sites act as barriers that im |
| Degree Course | MS Civil Engineering (Transportation Engineering) |
| Language | English |
| Keyword | environment; air pollution; traffic-related air pollution; spatiotemporal analysis; traffic; pollution exposure assessment; risk assessment for pollution; traffic pollution |
| Material Type | Thesis/Dissertation |
Preliminary Pages
4.61 Mb
Category : F - Regular work, i.e., it has no patentable invention or creation, the author does not wish for personal publication, there is no confidential information.
Access Permission : Open Access