Comparison of the HCM and Singapore Models of Arterial Capacity

Piotr Olszewski


The paper compares two methods of modelling the relationship between arterial travel speed and traffic flow. The Highway Capacity Manual method relies on estimating delay at individual intersections and requires a lot of detailed input data. The model developed by CTS in Singapore requires only two input parameters: intersection spacing and minimum signal delay. Both models show similar trends in travel speed but the HCM method generally predicts lower speeds for uncongested traffic. The Singapore survey data show that arterial running time per kilometer depends on flow rate as well as on intersection spacing. Suggestions are made on how to improve the existing models by using more precise definitions of arterial flow, capacity and running time. It seems that aggregate models such as the CTS model are more appropriate for planning applications when detailed information on signal timing is not available.
Author Piotr Olszewski (FCE / IRB)
Piotr Olszewski,,
- The Institute of Roads and Bridges
Journal seriesProcs., TRB Highway Capacity Committee Summer Meeting (W. Brilon, Editor), Hawaii
Issue year2000
Publication size in sheets0.55
Languageen angielski
Score (nominal)0
Score sourcejournalList
Publication indicators GS Citations = 12.0
Citation count*12 (2020-09-13)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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