International Journal of Advanced Engineering Research and Science (IJAERS) [Vol-4, Issue-11, Nov- 2017] https://dx.doi.org/10.22161/ijaers.4.11.17 ISSN: 2349-6495(P) | 2456-1908(O) www.ijaers.com Page | 111 The Effect Analysis of Traffic Volume, Velocity and Density in Dr.Siwabessy Salobar Road Selviana Walsen, La Mohamat Saleh Civil Engineering of Politeknik Negeri Ambon Abstract—Traffic density has been considered to be affected by the traffic volume and the traffic velocity. This study focuses on investigating the roles of both aspects on the traffic density along the street of Dr. Siwabessy, from Ambon City to Air Salobar or vice versa. This street has been considered to be one busy street in Ambon City with various vehicles passing by along with the crowded pedestrian activities and with new business centrals (e.g. school) along the road describing the complexity of the street traffics. From the study, it was found that the traffic velocity was statisitically the more significant factor in determining the traffic density compared to the traffic volume following the use of the coefficient regression model. The other finding is that the traffic along the street can be classified to be under-saturated Keywords— Traffic volume, traffic velocity, traffic density, regression model. I. INTRODUCTION According to Mashuri (2012) more and more community activity affect the characteristics of traffic flow like speed, volume and traffic density. According to Ekawati et al (2014), one of the main causes of traffic jam is unbalanced road capacity with an increasing number of vehicles. Dr. Siwabessy street in Air Salobar is one of the important streets in Ambon City, which serves the traffic flow from Ambon to Air Salobar. This road is used as a connecting lane from Ambon to Nusaniwe Sub-district. In recent years population growth in Nusaniwe sub-district has been caused the significant increase of vehicles through Dr. Siwabessy street. On the other hand, traffic jam caused by the activity from several new office and school building at this area. So Dr. Siwabessy highway segment will be more crowded because of the volume of vehicles and will affect to the capacity of existing highway. By looking at these conditions it is necessary to do a study to determine the speed, volume and density of roads Dr. Siwabessy-Air Salobar which is a highway that always passes many types of vehicles, as well as daily activities of society. So we will know the road capacity feasibility. II. LITERATURE 2.1 Highway Definition Highway are transport infrastructures covering all parts of the road, including auxiliary buildings and equipment intended for traffic. The other hand it means a place passed by vehicle that through a road so that the highway is a very important in all aspects of life. The highway is also affect of an economy and the progress of a country. 2.2. Capasity The capacity of the highway is the maximum number of vehicles that can pass through the road within a period of one hour without causing traffic jam (Warpani, 1985). According to MKJI (1997) capacity is the maximum current vehicle through a path that can be maintained per unit of hours under certain conditions. The basic equation for calculating road capacity in Indonesian Road Capacity Manual (1997) is: C : Co x FCw x FCSP x FCSF x FCCS with : C : road capacity (smp/hour) Co : basic capacity (smp/hour) FCw : preparation of wide traffic lane factor (smp / hour) FCSP: direction separation adjustment factor FCSF :adjustment factor due to abstacles FCCS :adjustment factor of city capacity For urban road capacity, basic capacity can be seen in table 2.1 Table.2.1 The Basic Capacity of Urban Roads Type Basic capacity (smp/hour) four-divided lane 1650/ lane Four-undivided lane 1500/lane Two undivided lane 2900/two lane