Developing geovisualization applications with open source web server maps to road safety
ISBN 978-85-88783-11-9
Authors
1Chaves, M.; 2Silva, J.F.
1UNESP Email: mariana.unesp@hotmail.com
2UNESP Email: jfcsilva@fct.unesp.br
Abstract
Road transportation is the most used mode in Brazil. The infrastructure does not answer the demand with quality and safety yet, and the indices of road accidents challenge the society in general and also the transportation managers. The causative factors, notably called contributory factors to road accidents, are the road conditions, the weather, the vehicle and driver. Good engineering projects, effective legislation and enforcement, and the triad education, culture, and scientific information can help to minimize the risks of accidents. Cartographic sciences, allied to geographical information systems (GIS), can contribute to this goal through the georeferencing of accidents. Understanding the spatial data distribution, required by scientific and social demand, is today a major challenge. In order to cooperate with the efforts to reduce risks and rates of road accidents, a GIS, called webSIG/SV, has been started to be available in the internet. The system prototype integrates GIS, internet, and mobile mapping technologies so that it means another step to join geotechnologies to road safety engineering. Either by integrating existing processes or by opening up new possibilities of data acquisition and analysis for the decision making process, the application intends to be a contribution to reduce the road accident risks focusing on the driver. Still under development, the project reported previous studies of a stretch of the highway SP-270 (Raposo Tavares), between kilometers 493 and 592. Records of accidents (data) were provided by the Military Road Police (PMR) of São Paulo state. The critical segment was covered with a mobile mapping system and the images were inserted into webSIG/SV for viewing purposes. The same system will be used in this continued project for testing two sections, considered very dangerous by PMR-SP: one in the SP-294 highway (Commander João Ribeiro de Barros) and another in the SP-613 (Arlindo Bettio). The studies of this thesis are facing to the road contribution factor, road safety management by the critical point method supported by spatial statistical analysis, and the integration of cartographic maps and webSIG/SV. It is expected that such analyses confirm and highlight the critical sections, which, in theory, would correspond to a lack of one or more factors of safety in a particular highway section, thus suggesting that the highway, or a stretch of it, could actually be a contributing factor of accidents in these critical points. A mobile mapping system will be used here to map those sections, to obtain georeferenced images in order to provide visualization and highlights the importance of these factors. It is, after all, an additional contribution to minimize risks of road accidents through a process of scientific information on the web.
Keywords
ROAD SAFETY; GEOINFORMATION; MOBILE MAPPING