P Primary arterial road is a national road as a link between the national activies with the area activites, and the area activities with the local activites. The existence of primary arterial road is supported by primary collector road, local primary road and primary environment road as the link between every function of each road. Each street function has service standard that consists of road width, minimum speed, and the type of transport modes that may pass the road class. On the road corridor Narogong-Siliwangi which are located in districts Rawalumbu Bekasi City, as a primary arterial road has an incompatibility in terms of the minimum speed standard. It is necessary to identify the factors that cause traffic jam on the road corridor Narogong-Siliwangi, given the function is very important as the main connecting road between activities. Referring to PP 34 year of 2006 about Road, the existance of the connecting road is also important, because it is an entity that can affect each of the activities of traffic on each road hierarchy or the function of the road. However, the physical condition of the connecting road is very far from the established standard, both in terms of road width, minimum speed, as well as the use of transport modes that are allowed to pass the road function. Residential activity is not supported by the means of transport so encourage the society to use a private vehicle and caused high trip attraction and trip distribution on both primary arterial road towards the connecting road, and vice versa. And with the presence of industrial activity on the road class that shouldn’t be passed by the industrial transportation, causing the movement of freight vehicle transport modes are not supported by a proper road function. The width of the road can’t be adequate the dimensions of the mode of freight vehicles, causing queues of vehicles, which influences the state of traffic on primary arterial road, Narogong-Siliwangi Road. Therefore, the need for referral to resolve or reduce the traffic jam on Siliwangi Narogong primary arterial road, by restoring the function of road width to its original functions in accordance with the width of the road. But considering the land use in the area of the road is very compact, and with the ownership of building permit which is owned by residents and existing companies, so that appear other alternative which is traffic engineering procurement, by applying the one way system on Cipendawa Lama Road for the freight vehicles , and only allowing the vehicles from the residential area that may crossing the road, and for the freight vehicle that come from Cipendawa Lama Road could not directly passing through the Narogong-Siliwangi primary arterial road, but could pass the Prapatan Road, then heading to Caringin Road, and out in the Narogong-Siliwangi primary arterial road, and it is also need to be supported by a vivid freight vehicle operating hours policy, so there will be no contact with other activities which will cause the same problem.