The following information was submitted:
Transactions: WSEAS TRANSACTIONS ON INFORMATION SCIENCE AND APPLICATIONS
Transactions ID Number: 89-153
Full Name: Christos Chalkias
Position: Please, select:
Age: ON
Sex: Male
Address: El. Venizelou 70, 17671, Kallithea, Athens
Country: GREECE
Tel: 210 9549347
Tel prefix: 0030
Fax:
E-mail address: xalkias@hua.gr
Other E-mails: antyfk@hua.gr
Title of the Paper: A GIS-based spatiotemporal analysis of the exposure to direct sun light on rural highways
Authors as they appear in the Paper: Christos Chalkias, Antigoni Faka
Email addresses of all the authors: xalkias@hua.gr;antyfk@hua.gr
Number of paper pages: 10
Abstract: Geographical Information System (GIS) technology integrates hardware, software and spatial data for capturing, storing, updating, managing, analyzing and displaying geographical data and phenomena. Spatiotemporal analysis of such phenomena is one of the major tasks of a GIS. In this paper, we use GIS for the modeling of the exposure to direct sun light in a rural road network. When a vehicle is moving towards the direction of the sun, drivers may experience temporary loss of vision. The main target is to build a system able to identify road sections at risk due to direct sun-light for a specific time period. The proposed methodology is based on the road network geometry, the relief of the study area under investigation (Digital Elevation Model – DEM) and the sun position. The hillshade creation function and various filtering techniques have been adopted. These techniques are based on the geometry of road segments in comparison to the sun position. The output of t!
his analysis is the identification of road network parts that appeared at risk for a specific time period. The proposed method is implemented in Santorini Island during summertime period. The results in this case study shows that a significant part (5% of the total road network length) of the road network is highly exposed to the risk under investigation during the summer. Additionally, the implementation of the proposed method for a long time period allows a dynamic modeling of the conditions under investigation, and the adoption of various preventing actions.
Keywords: GIS, spatiotemporal modeling, direct sun-light exposure, DEM, road network risk analysis
EXTENSION of the file: .pdf
Special (Invited) Session: Risk evaluation by modelling exposure to direct sunlight on rural highways – A GIS approach
Organizer of the Session: 619-258
How Did you learn about congress: Michalis Petrakis, mike@meteo.noa.gr
IP ADDRESS: 195.130.90.211
