In spite of the strategic importance of the national Portuguese road network, there are no recent studies concerned with either the identification of contributory factors to road collisions or collision prediction models (CPMs) for this type of roadway. This study presents an initial contribution to this problem by focusing on the national roads NR-14, NR-101 and NR-206, which are located in Po...

All rights reserved by www.ijsrd.com 808 Clustering of Vehicles by Performance Characteristics for Indian MultiLane Highways Arichandran Ramachandran Department of Civil Engineering Institute of Technology, University of Gondar, Post Box No. 196, Gondar, Ethiopia Abstract— Vehicle type plays an important role in the accident occurrence, lane changing process and capacity analysis. In heterogene...

In much of the world, the persistence of long-distance migrations by mammals is threatened by development. Even where human population density is relatively low, there are roads, fencing, and energy development that present barriers to animal movement. If we are to conserve species that rely on long-distance migration, then it is critical that we identify existing migration impediments. To deli...

In 1987, most states raised the speed limit from 55 to 65 mph on portions of their rural interstate highways. There was intense debate about the increase, and numerous evaluations were conducted afterwards. These evaluations share a common problem: they only measure the local effects of the change. But the change must be judged by its system-wide effects. In particular, the new 65 mph limit all...

BACKGROUND Understanding the ecological consequences of roads and developing ways to mitigate their negative effects has become an important goal for many conservation biologists. Most mitigation measures are based on road mortality and barrier effects data. However, studying fine-scale individual spatial responses in roaded landscapes may help develop more cohesive road planning strategies for...

We propose and develop a general approach based on reaction-diffusion equations for modelling a species dynamics in a realistic two-dimensional (2D) landscape crossed by linear one-dimensional (1D) corridors, such as roads, hedgerows or rivers. Our approach is based on a hybrid "2D/1D model", i.e, a system of 2D and 1D reaction-diffusion equations with homogeneous coefficients, in which each eq...

Roads are among the most widespread signs of man’s presence around globe. From simple low traffic trails to wide and highly used highways, roads have a array effects on wildlife. In present study, we tested how habitat reduction by may affect space use movement patterns Cabrera vole ( Microtus cabrerae ), near-threatened Iberian endemism, often living road verges. A total 16 voles were successf...

With expanding human populations, exponentially increasing motor vehicles, and public roads running through Protected Areas, road traffic is becoming an increasing concern in many countries. While studies have traditionally examined the role of highways in fragmenting and decimating animal populations, we carried out one of the first studies of the immediate behavioural responses, rather than i...

Metals such as antimony, cadmium, chromium, copper, lead, nickel, and zinc can be highly relevant pollutants in stormwater runoff from traffic areas because of their occurrence, toxicity, and non-degradability. Long-term measurements of their concentrations, the corresponding water volumes, the catchment areas, and the traffic volumes can be used to calculate specific emission loads and annual ...

The OpenStreetMap (OSM) project aims to establish a free geospatial database for the entire world which is editable by international volunteers. OSM contains wide range of different types geographical data and characteristics, including highways, buildings, land use regions. varying scientific backgrounds volunteers can affect quality spatial that produced shared on internet as an dataset. This...