Roads are networks that connect social infrastructure and accommodate the delivery of emergency services. Because of the
importance of roads, they should be safe and kept in good condition. To perform effective road management, the use of spatial and temporal
information is necessary. Maintenance management is an essential operation that should be carried out effectively for maintaining, repairing,
and rehabilitating roads. It is necessary to accumulate information produced during the entire life cycle of a road in order to analyze problems
and find solutions within a temporal sequence and to maintain roads strategically and effectively. In this paper, four-dimensional information
is defined as the combination of three-dimensional spatial information and temporal information. Four-dimensional information is required
for storing the historical information of road condition. This paper proposes a four-dimensional information management system to collect,
accumulate, share, and utilize four-dimensional information. The system consists of a spatial data infrastructure, road data models, a model
library, a common system interface, common functions, a road database, and a road application system. The road application system provides
functions for simulation, progress management, and the representation of four-dimensional information. The system is demonstrated using
actual data on road maintenance. It is verified that the system has the capability to be applied in practice
Roads are networks that connect social infrastructure and accommodate the delivery of emergency services. Because of theimportance of roads, they should be safe and kept in good condition. To perform effective road management, the use of spatial and temporalinformation is necessary. Maintenance management is an essential operation that should be carried out effectively for maintaining, repairing,and rehabilitating roads. It is necessary to accumulate information produced during the entire life cycle of a road in order to analyze problemsand find solutions within a temporal sequence and to maintain roads strategically and effectively. In this paper, four-dimensional informationis defined as the combination of three-dimensional spatial information and temporal information. Four-dimensional information is requiredfor storing the historical information of road condition. This paper proposes a four-dimensional information management system to collect,accumulate, share, and utilize four-dimensional information. The system consists of a spatial data infrastructure, road data models, a modellibrary, a common system interface, common functions, a road database, and a road application system. The road application system providesfunctions for simulation, progress management, and the representation of four-dimensional information. The system is demonstrated usingactual data on road maintenance. It is verified that the system has the capability to be applied in practice
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