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All Journal JUTEKS - Jurnal Teknik Sipil
Demon, Stephanus Ola
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Civil Engineering, Building, Construction & Architecture Engineering Environmental Science Materials Science & Nanotechnology Transportation

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Use of Web-GIS Database Model to Accommodate Public Participation in the Improvement of Sustainable Road and Bridge Management: A Conceptual Idea Demon, Stephanus Ola; Nani, Paskalis Andrianus; da Costa, Don Gaspar Noesaku
JUTEKS : Jurnal Teknik Sipil Vol 9 No 1 (2024): JUTEKS (Jurnal Teknik Sipil)
Publisher : P3M- Politeknik Negeri Kupang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32511/juteks.v9i1.1220

Abstract

Sustainability is usually associated with energy source, ecological, soil and environmental aspects. Periodical road and bridge preservation is required to ensure the increasing of accessibility and mobility level, to increase regional economics’ growth, to minimize unplanned or unpredicted environmental consequences and to improve institutional arrangement capability as well. Road and bridge preservation is commonly managed based on its level of damage and constrained in budgeting. Poor public policy makes it worst. Therefore, the issue of strengthening the capacity of regional road and bridge management institutions is deemed important and urgent not only to reduce roads and bridges preservation cost but also to increase regional economics’ growth. Therefore, a proper road preservation type and priority should be determined based on technical, socio-economics, environment and public policy consideration. However, annual road and bridge functional condition data collection took high cost because it has been carried out by engineering consultant. The aim of this study is resolve it by providing a public participation portion in a road and bridge data base model. They are simply asked to send a real time condition of road s or bridge nearby to the local authority. The results strongly indicate that cost saved obtained from it could be focused to road and bridge preservation cost.
Considering Speeding Behavior when Designing a Workable Road Pavement at Downgrade Un-signalized Intersection Sianto, Paulus; Demon, Stephanus Ola; da Costa, Don Gaspar Noesaku
JUTEKS : Jurnal Teknik Sipil Vol 9 No 2 (2024): JUTEKS (Jurnal Teknik Sipil)
Publisher : P3M- Politeknik Negeri Kupang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32511/juteks.v9i1.1221

Abstract

Result of field observation shown that the tendency of riders to exceed speed limit also occurred at downgrade road segments, whereas previous study had reported that even on a flat road only riders with braking ability of 6 m/s2 can be avoided from crash due to the presence of unexpected object suddenly appears at 20 m ahead when traveling at around 60 km/h. This might be triggered by lack of information about pavement, geometrical and traffic condition surrounding. The aim of this study is to identify the accident risk at downgrade road segments due to inappropriate speed choice and/or pavement condition. Accident probability was assessed using the safety factor model, i.e., the ratio of available to minimum stopping sight distances. The minimum stopping sight distance was modified from the AASHTO stopping sight distance model, whilst the available stopping sight distance was determined using the average critical gap acceptance of 35 m obtained from field measurement. From the result of simulation, it was found that only riders with a braking ability of greater than 6.57 m/s2 could avoid crash and/or fatal accident safely. Besides, if the difference in braking ability was around 2 m/s2 then it is required a minimum safety distance of 15.1 m between the following motorcyclists. This strongly indicate that a workable road pavement design should be developed based on appropriate speed limit and/or geometrical condition
Co-Authors Don Gaspar Noesaku da Costa Paskalis Andrianus Nani Sianto, Paulus