Particle pollution levels along many roads in the capital and noise pollution levels on all roads in the city are above safety standards, the Department of Environment said on Thursday.
The department under the Bangkok Metropolitan Administration commissioned a company to measure and analyse the air quality and noise levels at 50 spots that are near roads throughout Bangkok from November 2012 to February 2013.
According to the study, three locations with the highest level of particles smaller than 10 micrometres (PM10) are around Ratchadaphisek, Romklao and Rama 3 roads, department deputy chief Suwanna Yoongroonruang said.
The highest levels of total suspended particles (TSP) were recorded at areas near Rama 3, Romklao and Somdet Phrachao Taksin roads.
The noise levels at all roads across the capital city are above the safety standard of 70 dB, based on the research.
"Particulate matter not only causes dirtiness but also causes health issues for people. Large doses of particulate matter can lead to respiratory infections, especially smog from cars which can also cause cancer," she said.
District personnel need to clean roads and sidewalks more frequently, she said. They also have to be stricter at enforcing enclosures around construction sites and permitting the use of vehicles that emit black smoke and cause loud noises, she added.