Case Study

Emission policies and clean fuel go hand in hand

Impact of cleaner fuels and vehicles in Bangkok on PM2.5

Case Study: Bangkok

In 2000, Bangkok was one of the top 10 most polluted Cities in Asia, with a vehicle population of 5 Million.
Switching from Euro 3 to Euro 5 has reduced Thai emissions by more than half
Many studies have shown that emissions standards alone do not achieve the benefits of clean air quality. Rather, improved fuel is key. With stricter emission standards today, we are seeing a rise in the demand for clean fuel components for improving fuel quality.
Impact of cleaner fuels and vehicles in Bangkok on PM2.5
2011
2012
2013
2014
2015
2016
2017
μg/m3
120
100
80
60
40
20
0
64
11
57
33
86
12
61
34
Euro 4
Fuels
112
9
72
35
Euro 4 new Vehicles
76
5
60
32
91
11
59
29
87
10
55
29
77
8
52
26
R2 = 0.7778
Maximum
95 Percentile
Average
Minimum
Linear Regression

Source: Presentation of Dr. Supat Wangwongwatana
Watch An Interview with Dr. Supat Wangwongwatana

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