Due to the need to update the current guidelines for highway design to focus on safety, this study sought to build an accident prediction model using a Geographic Information System (GIS) for single-lane rural highway...
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Due to the need to update the current guidelines for highway design to focus on safety, this study sought to build an accident prediction model using a Geographic Information System (GIS) for single-lane rural highways, with a minimum of statistically significant variables, adequate to the Brazilian reality, and improve accident prediction for places with similar characteristics. A database was created to associate the accident records with the geometric parameters of the highway and to fill in the gaps left by the absence of geometric highway plans through geometric reconstitution or semi-automatic extraction of highways using satellite images. The Generalized Estimating Equation (GEE) method was applied to estimate the coefficients of the model, assuming negative distribution of the binomial error for the count of observed accidents. The accident frequency and annual average daily traffic (AADT) were analyzed, along with the spatial and geometric characteristics of 215 km of federal single-lane rural highways between 2007 and 2016. The GEE procedure was applied to two models having three variations of distinct homogeneous segmentation, two based on segments and one based on the kernel density estimator. To assess the effect of constant traffic, two more variations of the models using AADT as an offset variable were considered. The predominant correlation structure in the models was the exchangeable. The principal contributing factors for the occurrence of collisions were the radius of the horizontal curve, the grade, segment length, and the AADT. The study produced clear indicators for the design parameters of roadways that influence the safety performance of rural highways.
This report shows the structural retrofitting of a two-story reinforcedconcrete (RC) welfare-facility building in Niigata prefecture, which was built in 2002. During the Chuetsu earthquake in 2004, the first floor win...
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Three-dimensional (3D) representation of cultural heritage in a digital environment is coming into prominence for documentation of geometric and semantic details and the interpretation of shape representation from aca...
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This study analyzed the effectiveness of a vegetation strategy for mitigating heat within a bus stop shelter by implementing vegetation wind permeability and transpiration cooling processes using a computational fluid...
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The purpose of this study is to focus on the indicators related to motivation in the Work Mind, and to organize the concepts by Pile Sort experiments using the sentences of the question items that compose each indicat...
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This study focuses on the investigation of the influence of CO2 concentration on the carbonation process in cementitious paste using ordinary Portlandite cement and limestone-calcined clay cement, specifically on the ...
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The global construction industry is responsible for 39% of CO2 emissions and for more than 50% of the extracted natural resources. Dematerialization and the use of low-carbon materials would be mitigating actions in t...
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The expansion and densification of cities should be planned to ensure minimum health conditions for buildings. In this sense, this study is interested in the right to solar access for buildings using the analysis of s...
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Brazil’s continental dimensions bring huge challenges for the Federal Administration,particularly in relation to low income *** this sense,in 2009,Federal Government has launched a huge habitational program entitled...
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Brazil’s continental dimensions bring huge challenges for the Federal Administration,particularly in relation to low income *** this sense,in 2009,Federal Government has launched a huge habitational program entitled“Minha Casa Minha Vida”(in English MHMLP-the“My House,My Life”program)which has been,so far,the biggest social housing Federal program,and has produced millions of SIH(social interest housing)*** program was discontinued in *** the program has been huge,there were few units built in urban centers,increasing the urban *** feasibility of SIH enterprises in the context of the MHMLP leads to the production towards the outskirts,where the land cost better fits the *** cost analysis,however,does not take into consideration future costs of an inefficient infrastructure,poor social services and public safety issues,with impact on the cities’operational *** paper compares the total building cost of SIH in peripheral and central areas,emphasizing the benefits of production in central areas when considering indirect operational and infrastructure *** research takes into account the infrastructure already available in central areas and the opportunity of appropriate abandoned or underutilized buildings and urban empty *** this sense,a case study has been conducted in two projects in the Metropolitan Area of Rio de Janeiro(RJ)comparing the estimated budget of SIH built far from urban centers,to the probable budget occupying underutilized *** indicate the necessity to review the parameters adopted when discussing the production of low income housing considering the cities’development as an integrated system.
This study analyzed the actual condition of the support projects for vacant house utilization in Tokyo’s 23 wards. As a result of interview researches in five wards set up this support projects, the subsidies per yea...
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