Autonomous vehicle navigation in urban road networks will be possible in the future, making traveling yet another activity that does not need the human intervention. In this paper we empirically evaluate different policies to manage a reservation-based intersection, an infrastructure facility proposed by Dresner and Stone to regulate the transit of vehicles through intersections. We evaluate tw...

Urban arterials are characterized by frequent intersections. Queue length and delay are the two primary measures of performance of intersection. These measures play a primary role in determining the arterial performance. This article presents a methodology to determine the number of vehicles in queue at a signalized intersection for under saturated traffic conditions. The results obtained were ...

‎let $r$ be a commutative ring with non-zero identity. ‎we describe all $c_3$‎- ‎and $c_4$-free intersection graph of non-trivial ideals of $r$ as well as $c_n$-free intersection graph when $r$ is a reduced ring. ‎also, ‎we shall describe all complete, ‎regular and $n$-claw-free intersection graphs. ‎finally, ‎we shall prove that almost all artin rings $r$ have hamiltonian intersection graphs. ...

Many researchers conducted efforts for improving the accuracy of road extraction from satellite images. Many studies have used optical spectrum information of each pixel for road extraction. By applying this method for high resolution satellite image, some problems occurred. This situation is remarkable for urban area. Most of the case, we need the information about land use. In this study, we ...

A proper non-empty subset C of the points of a linear space S = (P; L) is called line-closed if any two intersecting lines of S , each meeting C at least twice, have their intersection in C. We show that when every line has k points and every point lies on r lines the maximum size for such sets is r + k ? 2. In addition it is shown that this cannot happen for projective spaces PG(n; q) unless q...

the relationship between public health and urban planning is an innovative and important issue that it has prominent position in future urban planning. in this context, adverse air quality condition and air pollutant concentrations higher than the permitted limit set by the world health organization is considered as a threat to the health of citizens in big cities. according to result of air po...

This open access book is focused on the intersection between urban brownfields and sustainable development of cities.

BACKGROUND Pedestrians distracted by digital devices or other activities are at a higher risk of injury as they cross streets. We sought to describe the incidence of pedestrians distracted by digital devices or other activities at two highly traveled urban intersections after the implementation of a pedestrian safety intervention at one of the intersections. METHODS This was an observational ...