Abstract
AbstractThe Indonesian Highway Capacity Manual (IHCM) as a reference in determining road capacity in Indonesia was made in 1997 by the Directorate General of Highways, Ministry of Public Works and Public Housing. Currently, the composition of traffic on roads and the number of residents is very significantly different from the year 1997. Road capacity based on a current calculation based on IHCM shows very pessimistically compared with the traffic volume data. Those very significant differences indicate the need to evaluate the method of determining road capacity based on the IHCM. To evaluate and revise the IHCM, research was conducted on several roads grouped by road type. This research was conducted at road type 4/2 D (four lanes two ways with separator) on the H.R. Rasuna Said Jakarta. The survey results obtained traffic volume, speed, side friction in the morning, midday, and afternoon. Results analysis side friction values obtained are not accommodated with those in the IHCM, so revisions are needed for other parameters that have a greater influence, namely basic capacity.KeywordsRoad capacitySide frictionIHCM 1997
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