Monitoring, predicting and understanding tra c conditions in a city is an important problem for city planning and environmental monitoring. GPS-equipped taxis can be viewed as pervasive sensors and the large-scale digital traces produced allow us to have a unique view of the underlying dynamics of a city’s road network. In this paper, we propose a method to construct a model of tra c density ba...

Evaluation and analysis of noise pollution levels have been carried out to determine the level of noise and its sources in Ilorin metropolis. Noise measurements have been done in the morning, at noon, in the evening, and at night to determine noise pollution all over the city. The selected areas of study are commercial centers, road junctions/busy roads, passenger loading parks, and high-densit...

Studying the influencing factors of carbon dioxide emissions is not only practically but also theoretically crucial for establishing regional carbon-reduction policies, developing low-carbon economy and solving the climate problems. Therefore, we used a geographical detector model which is consists of four parts, i.e., risk detector, factor detector, ecological detector and interaction detector...

Advanced Centralized RTO is a project in which the traffic is regulated depending on the vehicle density .It also consists of detecting those vehicles which break the signal and the message will go to owner that he has break signal and suppose to pay fine within limited interval of time. In case if fine is not paid then petrol tank will automatically get locked. For tracking vehicle density the...

Road traffic congestion is a recurring problem worldwide. This is primarily because infrastructure growth is slow compared to growth in number of vehicles, due to space and cost constraints. This paper proposes a new vehicle density measurement method using camera sensor and computational technology. The striking feature of the proposed system is that it is fully implemented on an embedded plat...

As the number of vehicles in roads increases, information of traffic density becomes crucial to municipalities for making better decisions about road management and to the environment for reduced carbon emission. Here, the problem of traffic density estimation is addressed when there is continuous influx of vehicle data. First the traffic density is modeled by the clusters of the speed groups t...

Extensive Air Quality (AQ) studies inspired by social needs are already carried out in Bulgaria and several projects had started to achieve a better understanding of the spatial and temporal patterns of the main atmospheric pollutants. National operational AQ forecast system is in stage of completion and the goal is to deliver informative forecast products for the various users needs. Emission ...

We study the connectivity in vehicular ad-hoc networks in a downtown scenario, where the mobility of vehicles is constrained on a lattice-shaped road network. We theoretically investigate the connectivity under the Poissonpositioning assumption, where vehicles are positioned according to a Poisson process on each road at any arbitrary instants. We find that the Poisson-positioning assumption al...

The available sight distance (ASD) in front of the driver to detect possible conflicts with unexpected obstacles is fundamental for traffic safety. In the last 20 years, road design software (RDS) has been continuously updated with dedicated modules to estimate ASD, thus assessing the quality of project from a safety point of view. Unfortunately, the evaluation of ASD still represents an issue ...