International Journal of Highway Engineering (한국도로학회논문집)

Korean Society of Road Engineers (한국도로학회)
권호 표지
DOI QR코드

DOI QR Code

Development of Adjustment Factors under Day and Night Conditions for Freeway Capacity to Improve Traffic Safety

교통안전 향상을 위한 주야 변화에 따른 고속도로 용량 보정계수 개발에 관한 연구

  • 김영선 (아주대학교 교통연구센터) ;
  • 이상수 (아주대학교 교통시스템공학과)
  • Received : 2015.06.05
  • Accepted : 2015.07.02
  • Published : 2015.08.17
Download PDF
⟨ Previous Next ⟩

Abstract

PURPOSES: This study analyzes the characteristics of traffic flow on freeway sections under daytime and nighttime conditions to improve traffic safety, and suggests a method to estimate an accurate freeway capacity value that reflects these characteristics. METHODS : The trends and differences in capacity were investigated using comprehensive field data collected under both daytime and nighttime conditions on freeway sections with designated speeds of 80, 100, and 120 kph. RESULTS : The capacity values under nighttime driving conditions were reduced by 3.3%, 6.9%, and 8.8% at 80, 100, and 120 kph, respectively. Several nighttime adjustment factors were deduced for each designated speed category from the analysis results. CONCLUSIONS : It is expected that more accurate capacity values can be estimated for freeway sections under nighttime conditions by applying the resulting adjustment factors. In addition, traffic safety will be improved through the increased efficiency of traffic management on these freeway sections.

Keywords

References

  1. Ahn, J. 2010, Research on highway capacity Change of Day and night, "Effect of Weather Condition on Traffic Flow", Kyonggi University.
  2. Al-Kaisy, A. F., Hall, F. L. 2000, The Effect of Darkness on the Capacity of Long-Term Freeway Reconstruction Zones. In Transportation Research Circular E-C018, pp.164-175.
  3. Botma, H., Van Goeverden, C., Bovy, H. L. 1998, Effect of road lighting on capacity of freeways. Proc., Third International Symposium on Highway Capacity, Transportation Research Board, Copenhagen, Denmark, pp.181-198.
  4. Korea Astronomy and Space Science Institute, Astronomy and Space Science Information, 2007-2009.
  5. Korea Expressway Corporation 2007, Traffic Counting Data, Korea Expressway Corporation.
  6. Korea Expressway Corporation 2008, Traffic Counting Data, Korea Expressway Corporation.
  7. Korea Expressway Corporation 2009, Traffic Counting Data, Korea Expressway Corporation.
  8. The Korea Transport Institute 2001, Korea Institute of Civil engineering and Building Technology, Korean Society of Transportation, Preparation of Korean Highway Capacity Manual Improvement Research(1st-3rd) Final Report, The Ministry of Construction and Transportation.
  9. TRB 2000, Highway Capacity Manual, National Research Council, Washington D.C., TRB.
  10. TRB 2010, Highway Capacity Manual, National Research Council, Washington D.C., TRB.
  11. The Minister of Land, Infrastructure and Transport 2001, Korea Highway Capacity Manual.
  12. The Minister of Land, Infrastructure and Transport 2013, Korea Highway Capacity Manual.