Plastic waste processing is a problem that almost several countries in the Asian region are unable to overcome. One of the latest innovations carried out in the field of road pavement construction is mixing HDPE type plastic waste that has been processed into plastic seeds into the asphalt concrete mixture. Previous research has shown that HDPE plastic waste may be reused to improve the physical properties of temperature-sensitive asphalt and improve the stability of asphalt concrete. This study was conducted to determine the effect of using HDPE plastic ore as a mixed additive on the Asphalt Concrete-Wearing Course (AC-WC) using Marshall parameters. Marshall Parameters used are stability, flow, VIM, VMA, VFA, and MQ. The study was conducted in a laboratory by testing 42 samples with different levels of HDPE plastic seeds, mixed using wet methods to determine Marshall Characteristics. Manufacture of test objects using asphalt type, which has a penetration rate of 60/70. The initial research results showed that the optimal asphalt content (OAC) is 5.5%, with the percentage content of HDPE plastic seeds around 0, 1, 2, 3, 4, 5, 6, and 7% compared to asphalt weight. The results showed that the effect of HDPE plastic seed content on the AC-WC mixture increased the value of Marshall Characteristics and met all the requirements of SNI 06-2489-1991. This finding shows that HDPE plastic seeds deserve to be an alternative material for road pavements. Doi: 10.28991/cej-2021-03091744 Full Text: PDF

In achieving the development of Tarakan City, the role of land transportation has an important and strategic position, so the policies need to be integrated into a single land transportation management policy and its impact on the economy of the people in Tarakan City. Various policies have been issued, to minimize the problem of land transportation, but no matter how good the policy will not work optimally as long as land transportation management is not improved. This study uses a descriptive-qualitative method because it seeks to find empirical facts with the right interpretation of the actions of existing phenomena. The results of the study: 1. The selection of land transportation in accordance with the characteristics of the City of Tarakan, and taking into account the needs and interests of all different levels of society, is able to support the effectiveness and efficiency of providing city public transportation services. 2. The development of an adequate land transportation network in Tarakan City has been able to increase the growth of the community’s economic sector, increase the value/price of land, the development of the small, medium, and large scale businesses, the occurrence of product specialization between regions, the concentration and urbanization of the population, especially in areas that have opened access roads and transportation. So that there is an increase in the income of the City of Tarakan accompanied by an even distribution of goods between residents, business fields spread over several areas. In addition, there has been an increase in the number and types of finished goods and services that consumers, government, and industry can produce.

This study aims to assess the condition of pavement to determine the type and level of damage that occurs on the road, determine the handling or maintenance based on the damage that occurred. Calculating the value of road damage, One way to determine the condition of road damage is to use the Pavement Condition Index (PCI) method and to make road maintenance decisions using Fuzzy Logic, and provide maintenance model simulations. The stage of data collection is done by direct observation to the field and data analysis using PCI and Fuzzy Logic methods to make decisions with the help of Matlab Student Version software. The research location is Liang Bunyu Street, West Sebatik Sub-District, Nunukan district. The results obtained from the data analysis on the damage to the Liang Bunyu Street section have a PCI value of 804,53 of Damaged with Average grade condition based on Pavement Condition Index (PCI) pavement rating. Fuzzy logic Mamdani Method, road maintenance, obtained by road damage of 804.53 m2 and Grade Condition 70 %, with the decision of maintenance of 26 is Escalation.

<em>The problems of passenger transportation (TAP) in Tarakan City are multi-dimensional, such as, fares and routes that are less organized and uneven, inconvenience and less secure, excess passengers during peak hours and vice versa, condition of operator systems, increased pollution and noise and the number of accidents and traffic violations, and driver behavior. In short, the root of the problem is the incompatibility between the Regional Spatial Plan (RTRW) for the city of Tarakan and the TAP. This study aims to assess the performance of passenger transportation based on descriptive statistical methods to: see the demand for population movement; route performance and transport operations; and the performance of transportation infrastructure, as well as the level of road service in the form of the ratio of volume per road segment capacity. The results achieved found that the existing performance of TAP in Tarakan City was relatively not optimal, the level of main road service on secondary roads because the increase in vehicle volume was significantly influenced by the high population movement, land use, level of transportation service, transportation comfort, load factor, and road conditions.</em>

The development of the Tarakan City Road network for coastal areas has increased. The area of Tarakan in particular, the Binalatung Street has improved quality, it aims to help the community activities to fulfill daily needs. In the activity of this beach road increase has risks that can affect the quality of the work so it is interesting to be researched from the point of view of Public Works and the planning of the city Department as the owner. The research method is done by spreading questionnaires and interviews, with respondents from the Public Works and the planning of the city Department of Tarakan as the owner of the project to increase the road of Tarakan. From the questionnaire will be processed with statistics to find out the highest risk events from the road enhancement activities. The results obtained from this study are from 13 risk variables from 9 risk criteria. analysis of inter-risk relationships followed by micmac analysis so that it is obtained: 1). Autonomous: 1 risk variable. 2). Dependent: 4 risk variables. 3). Linkage: 5 risk variables. 4). Independent: 3 risk variables.