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Analysis of the Value of Ability to Pay & Willingness to Pay Toll Tariffs in the People of Gresik Regency Based on the Facilities and Infrastructure of the Krian – Legundi – Bunder Toll Road Brian V P, Andreas; Teki Tjendani, Hanie; Wulandari, Esti
Enrichment: Journal of Multidisciplinary Research and Development Vol. 2 No. 10 (2025): Enrichment: Journal of Multidisciplinary Research and Development
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/enrichment.v2i10.285

This study aims to determine the toll rates desired by the people of Gresik Regency based on the value of Ability to Pay (ATP) and Willingness to Pay (WTP) on the Krian – Legundi – Bunder (KLB) Toll Road. Through traffic count surveys and Road Side Interviews (RSI) at toll gates and arterial roads, data on vehicle population, payment ability, and user preferences for existing toll rates were obtained. The analysis employed a Logit model to evaluate the relationship between the ATP and WTP values and their correlation with the current toll rates. The results revealed that both the WTP and ATP of the community were lower than the existing toll tariff. Specifically, the study found that the optimal toll rate for users would be Rp. 1,100/km, which is 26.96% lower than the current rate of Rp. 1,506/km. This adjustment not only aligns better with the financial capacities of the users but also presents an opportunity for revenue optimization. By lowering the toll rate, it is predicted that increased traffic volume could compensate for the reduced fee, ultimately benefiting both the toll operator and the community. In conclusion, establishing a toll rate that reflects user preferences is crucial for enhancing accessibility and ensuring sustainable revenue generation for infrastructure development.

Analysis of Factors Causing the Risk of Work Accidents in the Construction of the CWI-02 ITS Surabaya Package Building Atwin Suyitno, Dwi; Teki Tjendani, Hanie; Wulandari, Esti
Enrichment: Journal of Multidisciplinary Research and Development Vol. 2 No. 11 (2025): Enrichment: Journal of Multidisciplinary Research and Development
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/enrichment.v2i11.310

Transportation is an important part that cannot be separated from human life, as it plays a crucial role in various aspects, including socio-cultural, economic, engineering, political, defense, and legal sectors. Roads are one of the primary means of transportation that significantly impact the development and progress of a region by facilitating the movement of goods, services, and people. The purpose of this study is to determine the performance of the Maliana - Bobonaro road transportation section, which serves as a vital route connecting key areas and supporting local economic growth. This study utilizes the Calculation Capacity Road method based on the PKJI 2023 (Indonesian Road Capacity Guidelines) to assess road performance and travel time. The results of the study indicate that the Maliana – Bobonaro road section demonstrates good performance, with a capacity (C) of 2735.85 smp/hour, a degree of saturation of 0.235 and 0.195, and a level of service categorized as A and B. These results suggest that the road operates efficiently with minimal congestion, ensuring smooth traffic flow and reducing travel time. However, continuous monitoring and periodic evaluations are essential to maintain this performance level, especially with potential future increases in traffic volume due to regional development. This study provides valuable insights for policymakers and transportation planners in improving road infrastructure and ensuring sustainable transportation systems.

Performance Index Analysis on the Construction of Probolinggo - Banyuwangi Toll Road Package 3 Sholikhah, Ummatus; Teki Tjendani, Hanie; Wulandari, Esti
Enrichment: Journal of Multidisciplinary Research and Development Vol. 2 No. 11 (2025): Enrichment: Journal of Multidisciplinary Research and Development
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/enrichment.v2i11.311

This study analyzes the performance index of the Probolinggo-Banyuwangi Toll Road Package 3 construction project using the Earned Value Method (EVM) to evaluate time and cost performance. Infrastructure projects, particularly toll roads, play a vital role in enhancing regional connectivity and economic growth. However, large-scale construction projects frequently face challenges such as cost overruns and delays. The Earned Value Method provides a comprehensive framework for measuring project performance by comparing planned costs, actual expenditures, and completed work. This research employs key performance indicators, including Budgeted Cost of Work Scheduled (BCWS), Budgeted Cost of Work Performed (BCWP), and Actual Cost of Work Performed (ACWP), to determine the Schedule Performance Index (SPI) and Cost Performance Index (CPI). The findings reveal that the project experienced schedule delays, with an SPI of 0.93, indicating that work progress was behind the planned schedule. However, the project maintained cost efficiency, as shown by a CPI of 1.06, reflecting lower actual costs than budgeted. The study highlights the importance of continuous performance monitoring using EVM to identify potential risks, optimize resource allocation, and support timely decision-making. The results provide valuable insights for project managers to improve efficiency and ensure project success in large-scale infrastructure developments.

Road Performance Analysis in Maliana District, Bobonaro Regency, Timor Leste godinho, domingos; Teki Tjendani, Hanie; Wulandari, Esti
Enrichment: Journal of Multidisciplinary Research and Development Vol. 2 No. 11 (2025): Enrichment: Journal of Multidisciplinary Research and Development
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/enrichment.v2i11.312

Transportation is an important part that cannot be separated from human life, as it plays a crucial role in various aspects, including socio-cultural, economic, engineering, political, defense, and legal sectors. Roads are one of the primary means of transportation that significantly impact the development and progress of a region by facilitating the movement of goods, services, and people. The purpose of this study is to determine the performance of the Maliana - Bobonaro road transportation section, which serves as a vital route connecting key areas and supporting local economic growth. This study utilizes the Calculation Capacity Road method based on the PKJI 2023 (Indonesian Road Capacity Guidelines) to assess road performance and travel time. The results of the study indicate that the Maliana – Bobonaro road section demonstrates good performance, with a capacity (C) of 2735.85 smp/hour, a degree of saturation of 0.235 and 0.195, and a level of service categorized as A and B. These results suggest that the road operates efficiently with minimal congestion, ensuring smooth traffic flow and reducing travel time. However, continuous monitoring and periodic evaluations are essential to maintain this performance level, especially with potential future increases in traffic volume due to regional development. This study provides valuable insights for policymakers and transportation planners in improving road infrastructure and ensuring sustainable transportation systems.

Time and Cost Analysis Using the Critical Chain Project Management Method in the Retrofitting Work of the East Java Province Human Rights Office Building into a Green Building Aji Sasongko, Christio; Teki Tjendani, Hanie; Wulandari, Esti
Enrichment: Journal of Multidisciplinary Research and Development Vol. 3 No. 9 (2025): Enrichment: Journal of Multidisciplinary Research and Development
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/enrichment.v3i9.568

The retrofitting work of the East Java Province Public Works Office Building into a Green Building encountered several obstacles during the construction process that caused delays in the execution of the work. Therefore, scheduling control is needed using the Critical Chain Project Management method. CCPM aims to manage scheduling design and process control by concentrating on eliminating multitasking, Parkinson's Law, and student's syndrome, which have been considered to cause suboptimal field work execution time and increased waste in terms of time. CCPM also has a buffer mechanism used in scheduling as a tool to protect project schedules from uncertainty, ensuring that every task can be completed on time. By using the Critical Chain Project Management method, a project buffer value of 26 days and a feeding buffer of 11 days were obtained, so that the original work duration of 180 days would become 143 days if the entire buffer of 37 days was not applied. The implementation cost with a value of Rp. 32,048,830,700 can be more efficient at Rp. 30,584,593,995 if the entire buffer is not used, with a project buffer saving of Rp. 1,028,923,090 and feeding buffer savings of Rp. 435,313,615, resulting in a total work cost savings of Rp. 1,464,236,705.

Cost Analysis of Additional Rainfall Station in The Kayan River Area, North Kalimantan Province Abdillah, Fadzil; Teki Tjendani, Hanie; Wulandari , Esti
Enrichment: Journal of Multidisciplinary Research and Development Vol. 3 No. 10 (2026): Enrichment: Journal of Multidisciplinary Research and Development
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/enrichment.v3i10.606

With a total area of the Kayan River Basin (WS) reaching 3,178,215.72 hectares, when compared to other River Basins in Kalimantan, the Kayan WS only has seven rain gauge stations, of which six are in good condition and one is damaged or inactive. Therefore, it is important to determine the appropriate rationalization method in order to obtain the appropriate number and distribution of rain gauge stations and can represent the characteristics of the area in the Kayan River Basin. The method used to analyze the rationalization of these rain gauge stations includes determining the maximum need, minimum need, and the Kagan-Rodda method. After evaluating several methods, the most suitable method for rationalizing rain stations in the Kayan WS is the Kagan-Rodda method. The results of the evaluation of the need for rain stations in the Kayan River Basin are 33 (thirty-three) stations, the existing rain stations are 6 (six) stations, the need for the addition of 27 (twenty-seven) new rain stations.

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