Analysis of vehicular traffic flow in the major areas of Kuala Lumpur utilizing open-traffic

Manogaran, Saargunawathy; Ali, Muhammad Faizan; Yusof, Kamaludin Mohamad; Suhaili, Ramdhan

doi:10.1063/1.5002031

Cited by 5 publications

(4 citation statements)

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“…In addition, O3 also might be reduced from NOx in the atmosphere, particularly through interaction with nitrous oxide. Therefore, the positive correlation of anionic surfactants with NOx has indicated a reverse correlation between surfactants and O3 [9,[30][31][32]. Table 3 shows the correlation of MBAS with meteorological factors in the study area.…”

Section: Composition Of Surfactants In Pm10 Diesel and Petrol Sootmentioning

confidence: 99%

Surfactants and Microbial Aerosol of Urban Particulate Matter (PM10) in Kuala Lumpur City Centre

Nurul Bahiyah Abd Wahid,

Nurnabilah Syahirah Jafri,

Muhammad Afiq Mohd Nor

et al. 2024

ARMNE

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Surfactants in the atmosphere potentially influence the global climate and may affect human health. This study aims to determine the compositions of surfactants extracted from urban particulate matter (PM10) and motor vehicle exhaust soot. In addition, microbial aerosol was also determined. A high-volume air sampler (HVAS) has been used to collect PM10 samples in Kuala Lumpur urban area. Meanwhile, the vehicle exhaust soot was collected randomly from the exhaust pipes of various types of diesel and petrol vehicles, using a soft brush during dry days. The concentration of anionic surfactants as Methylene Blue Active Substances (MBAS) was determined by the colorimetric method using a UV-Vis Spectrophotometer. The presence of microorganisms such as bacteria and fungi were investigated by colony count. In addition, the correlation between surfactants and traffic-related air pollutants has also been investigated. Results revealed that the average concentration of MBAS in particulate matter is 107.68 ± 7.91 µgm-3. Diesel vehicles demonstrated higher surfactant concentration in exhaust particulate matter with an average value of 0.227 ± 0.006 µmolg-1 compared to petrol vehicles (0.146 ± 0.003 µmolg-1). Based on this study, various mitigation procedures can be implemented to reduce the impacts of PM and exhaust soot for a better future.

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Section: Composition Of Surfactants In Pm10 Diesel and Petrol Sootmentioning

confidence: 99%

Surfactants and Microbial Aerosol of Urban Particulate Matter (PM10) in Kuala Lumpur City Centre

Nurul Bahiyah Abd Wahid,

Nurnabilah Syahirah Jafri,

Muhammad Afiq Mohd Nor

et al. 2024

ARMNE

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“…In Kuala Lumpur city center of Malaysia, road traffic growth has increased with average annual growth of 6% [1,2]. Generally, motor vehicles may cause the air pollution problem due to exhaust emissions as well as brake and tire abrasion [3]. One of the highest pollutants in the urban atmosphere is aerosol.…”

Section: Introductionmentioning

confidence: 99%

Influence of vehicular emissions and meteorological factors towards anionic surfactants in the urban atmospheric aerosol of Kuala Lumpur, Malaysia

Nor

Wahid

Hamid

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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This study aimed to determine the influence of vehicular emissions and meteorological factors on the level of surfactants in urban atmospheric aerosol from Kuala Lumpur city center, Malaysia. Aerosol samples were collected using a high-volume sampler equipped with the cascade impactor to separate fine mode (< 1.5 µm) and coarse mode (> 1.5 µm) particles. Besides, the exhaust particulate matter from various diesel and petrol vehicles was collected using a soft brush during dry weather. Colorimetric analysis was performed to determine the concentration of anionic surfactants as methylene blue active substances (MBAS), and the absorption was determined by using a UV spectrophotometer at a wavelength of 650 nm. Correlation analysis was conducted to determine the influence of vehicular emissions (NOx, SO2, CO and O3), and exhaust particulate matter on the level of surfactants. Results showed that surfactants as MBAS in fine particles showed the dominant values. Correlation analysis showed that the MBAS was positively correlated with NOx (p <0.05) and SO2 (p <0.01), and negatively correlated with O3 (p <0.01), which indicated that the traffic-related air pollutant may influence the anionic surfactants level. It is supported by the high level of MBAS in diesel exhaust particulate matter, particularly from the construction machinery, followed by lorries and buses.

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“…Despite the efforts of the government and state agencies to reduce traffic congestion, the issue is projected to get worse as car production and sales continue to climb. Floods, accidents, and road repairs are contributing to an increase in congestion, which makes traffic flow unpredictable and uncontrollable [1,2].…”

Section: Introductionmentioning

confidence: 99%

System Identification and Control of Automatic Car Pedal Pressing System

Jin¹,

Hashim²,

Ahmad³

et al. 2022

JISC

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This paper mainly explores the system identification and control of an automatic car pedal pressing system. Specifically, the system identification was achieved using an artificial neural network, with the help of MATLAB’s System Identification Toolbox. The proportional-integral-derivative (PID) controller and fuzzy logic controller were designed, and normalized with membership functions. These functions were scaled with a gain as a scaling factor. The controller gains were tuned by a metaheuristic algorithm named particle swarm optimization (PSO). On this basis, the two controllers were compared with a number of performance indices, including integral squared error (ISE), integral absolute error (IAE), integral time absolute error (ITAE), and mean squared error (MSE). The car pedal pressing performance was measured at different speed levels for each controller.

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Analysis of vehicular traffic flow in the major areas of Kuala Lumpur utilizing open-traffic

Cited by 5 publications

References 1 publication

Surfactants and Microbial Aerosol of Urban Particulate Matter (PM10) in Kuala Lumpur City Centre

Surfactants and Microbial Aerosol of Urban Particulate Matter (PM10) in Kuala Lumpur City Centre

Influence of vehicular emissions and meteorological factors towards anionic surfactants in the urban atmospheric aerosol of Kuala Lumpur, Malaysia

System Identification and Control of Automatic Car Pedal Pressing System

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