Antilock braking system (ABS) stops a vehicle wheel without locking while decreasing the stopping distance. Here we use fuzzy logic to detect the road conditions. Vehicle dynamics and braking systems is complex and proposed controller in different road detected states. They behave strongly non-linear which causes difficulties in developing a classical controller for ABS. Fuzzy logic, however fa...

plants polluted with pb produced by automobiles along the roads and highways have extensively been reported all over the world. it is the most important source of pollution in the environment. this research was carried out to determine the polluting degree of plants along the highways such as: rasht-anzaly, kelachay-ramsar, tehran-karaj, and isfahan-tehran. at each arbitrary point, a transect 1...

We provide the most comprehensive study to date on the correlation between network centrality measures and vehicular movement flows, using a model of the UK’s entire road network (2,031,971 nodes) and a very large dataset of vehicular movement counts (20,752 instances, evenly distributed over the UK’s territory). We describe the statistical associations between observed vehicular flows and the ...

PURPOSE To investigate the effect of various presbyopic vision corrections on nighttime driving performance on a closed-road driving circuit. METHODS Participants were 11 presbyopes (mean age, 57.3+/-5.8 years), with a mean best sphere distance refractive error of R+0.23+/-1.53 DS and L+0.20+/-1.50 DS, whose only experience of wearing presbyopic vision correction was reading spectacles. The s...

the optimum road spacing has been studied by many researches. it is an important step of forest road network planning. the goals of this study are determining the optimum road spacing in kheiroudkenar forest of nowshahr in northern iran and study of effect of kind of skidder on skidding cost and road spacing. continues time study method was used to determine the production rate of taf and timbe...

The Intelligent Transportation Systeim (ITS) utilizes Vehicle-to-Vehicle (V2V) and Vehicle-to-Roadside (V2R) communication, enabled by Vehicular Ad Networks (VANETs), to implement many traffic safety application. Vehicles and Road Side Units (RSUs), in VANETs, periodically broadcast messages, known as beacons, contain many vehicle’s driving parameters such as current position, direction, speed,...

This paper presents the impact of road user charging (RUC) on vehicle emissions through application of traffic assignment and pollutant emission models. It presents results of an analysis of five RUC schemes on vehicle emissions in Leeds, UK for 2005. The schemes were: a 3 pound sterling inner ring road cordon charge; a double cordon with a 2 pound sterling inner ring road and a 1 pound sterlin...

The Asiatic ibex (Capra sibirica) is typically found in the mountains of central Asia, studies on the habitat selection of this animal are few at present. We investigated the bedding and foraging sites selection by line census in the GuRenGuoLeng areas of Central Tianshan Moutains during summer, and assess how environmental factors affect their habitat use. Our results showed that there is no s...

The objective of an accident-mapping algorithm is to snap traffic accidents onto the correct road segments. Assigning accidents onto the correct segments facilitate to robustly carry out some key analyses in accident research including the identification of accident hot-spots, network-level risk mapping and segment-level accident risk modelling. Existing risk mapping algorithms have some severe...

Background and purpose: In the process of rapid urbanization and industrialization in developing countries, environmental pollution is a major concern. One of the fastest growing problems of environmental pollution is an excessive intake of lead in urban soils. Lead concentrations in urban soil may result from human activities such as vehicle emissions and industrial activit...