Remote Sensing of Motor Vehicle Emissions in Seoul

The authors analyze emissions data obtained by remote sensing in Seoul in 2019. The testing was conducted at 11 sites, and the emissions of more than 740,000 vehicles were measured. The sample was comprised mostly of light-duty passenger vehicles. The analysis showed that nitrogen oxide (NOx) emissions from Grade 4 (Euro 4) diesel light-duty vehicles (LDVs) are equal to or higher than Grade 5 (pre-Euro 4) diesel LDVs. Grade 5 vehicles are banned from the Seoul's Green Transport Zone to reduce emissions and improve air quality. The analysis suggests that emissions from Grade 4 vehicles should also be banned from the Zone. The analysis also indicates that ultraviolet (UV) smoke from Grade 5 diesel LDVs retrofitted with a diesel particulate filter (DPF) are 37% lower than those without filters, but the reduction is much lower than expected. Therefore, polices are needed to promote the retirement of older vehicles rather than retrofitting with DPFs. Removal of Grade 5 diesel vehicles and extension of the driving ban to Grade 4 vehicles would greatly reduce UV smoke and NOx emissions from diesel vehicles, leading to further improvement in Seoul's air quality.

• Record URL:
  https://theicct.org/wp-content/uploads/2022/02/true-seoul-remote-sensing-feb22.pdf
• 
• Summary URL:
  https://theicct.org/publication/true-seoul-remote-sensing-feb22/
• Summary URL:
  https://theicct.org/publication/true-fs-seoul-remote-sensing-feb22/
• Corporate Authors:

  TRUE - The Real Urban Emissions Initiative

  London,   United Kingdom 

  International Council on Clean Transportation (ICCT)

  1500 K Street NW, Suite 650
  Washington, DC  United States  20005

  FIA Foundation

  60 Trafalgar Square
  London,   United Kingdom  WC2N 5DS

  Korea Environment Corporation

  ,    

  Seoul Metropolitan Government

  ,    
• Authors:
  • Yang, Liuhanzi
  • Wu, Ruoxi
  • Bernard, Yoann
  • Dallmann, Tim
  • Tietge, Uwe
  • Shin, Sunggi
  • Yang, Il-woong
  • Ha, Dongjun
  • Park, Beunsoo
  • Yang, Songjae
  • Song, Jinyoung
• Publication Date: 2022-2

Language

• English

Media Info

• Media Type: Digital/other
• Features: Appendices; Figures; Maps; Photos; References; Tables;
• Pagination: 20p

Subject/Index Terms

• TRT Terms: Air quality; Diesel engine exhaust gases; Exhaust gases; Light vehicles; Nitrogen oxides; Remote sensing
• Geographic Terms: Seoul (Korea)
• Subject Areas: Environment; Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 01843624
• Record Type: Publication
• Files: TRIS
• Created Date: Apr 25 2022 10:07AM