In this paper, we study the capacity of Vehicular Ad Hoc NETwork (VANET). Due to the particular topology of such a network, results on the capacity of two dimensionnal ad hoc networks are not convenient. Indeed, the nodes are ditributed on a line (the road or the highway), thus they form a chain of nodes. This particular topology reduces the spatial reuse with regard to two dimensionnal network...

This Transportation Research Board publication contains the following papers: Assessment of Existing General Purpose Data Bases for Highway Safety Analysis, K.K. Mak, J.G. Viner, and L.I. Griffin, III; Accident Data as a Tool for Highway Risk Management, D.S. Turner and C.W. Colson; Generalized Loglinear Models of Truck Accident Rates, F.F. Saccomanno and C. Buyco; Estimation of Wet Pavement Ex...

IN T R O D U C T IO N It is generally agreed that a wet pavement surface presents less resistance to skidding than does the same surface in a dry condition. It is also well known that ice and snow are very slippery; but on the other hand, they are special conditions which do not reflect any skid characteristic of the pavement surface. It is, therefore, the wet surface condition that is critical...

In a world that is increasingly reliant on automobiles, efficient management of the transportation network is a key functionality of intelligent transportation systems (ITS). A wide range of these ITS applications rely on the extraction of current data as well as historical information in order to perform appropriately. This work presents a novel computer vision based approach for traffic manag...

R oad user cost is an important consideration in highway economic analyses. The two main components of this cost are (a) motorvehicle running cost and (b) travel time. Highway engineers and economists know that, for road user costs (running costs plus travel time), lower traffic volume usually provides the least unit cost; as volume increases, the cost to the user increases because of congestio...

Highway construction works have significant bearings on all aspects of sustainability. With the increasing level of public awareness and government regulatory measures, the construction industry is experiencing a cultural shift to recognise, embrace and pursue sustainability. Stakeholders are now keen to identify sustainable alternatives and the financial implications of including them on a lif...

The cooling performance of the stack radiator of a fuel cell electric vehicle was evaluated under various actual road driving conditions, such as highway and uphill travel. The thermal stability was then optimized, thereby ensuring stable operation of the stack thermal management system. The coolant inlet temperature of the radiator in the highway mode was lower than that associated with the up...

Recent experimental research has shown that ordinary unbounded steel reinforced elastomeric bearings (SREBs) can be considered as an attractive cost-effective option for the seismic isolation of highway bridges. To further investigate its benefits, the current study is focused on the seismic risk assessment of an optimally designed highway bridge isolated by SREB system. A typical three-span hi...

We examine how state governments adjusted spending in response to the large temporary increase in federal grants under the 2009 American Recovery and Reinvestment Act (ARRA). We concentrate our analysis on ARRA highway grants, which were especially likely to crowd out states’ own highway funding given the lack of matching requirements and according to past research on federal highway grants. Th...