نتایج جستجو برای: roadside
تعداد نتایج: 2653 فیلتر نتایج به سال:
FOREWORD The Federal Motor Carrier Safety Administration (FMCSA) Wireless Roadside Inspection (WRI) Program is demonstrating the feasibility and value of electronically assessing truck and motorcoach driver and vehicle safety at least 25 times more often than is possible using only physical roadside inspections. WRI Pilot Tests were conducted to prototype, test, and demonstrate the feasibility ...
The U.S. military, despite spending over $13 billion, appears powerless to stop the Iraqi insurgency’s improvised explosive devices (IEDs), which cause most of the military’s casualties and prevent victory by showing lawlessness and insecurity. However, this view ignores substitution effects we consider here. Using rational choice and expectations models, we find a backward-bending supply curve...
For some scenarios of vehicle tracking and identification, it is desired that radio-frequency identification (RFID) interrogators can be deployed on roadside lampposts or high poles. In order to meet this requirement, active RFID electronic license plate (e-plate) with a slot-dipole antenna is proposed to provide up-tilted beams. Numerical simulations demonstrate that the proposed e-plate anten...
Background In the state of Victoria in Australia, the development of effective alcohol and driving legislation has produced significant reductions in alcohol related road trauma over the past three decades. The development of drug driving legislation in recent years has followed a similar progression from providing for impairment based enforcement to the recent introduction of random roadside s...
Traditional wireless Medium Access Control (MAC) protocols suffer from a number of drawbacks when used in vehicle to roadside networks. This paper proposes an efficient MAC protocol that addresses a number of critical aspects required for MAC protocols for vehicle to roadside networks including elimination of hidden terminals, prioritized and fast handoff, fairness among nodes and optimal choic...
Node authentication in VANETs is one of the most important research topics nowadays. VANETs present unique challenges such as high node mobility, real-time constraints, scalability, gradual deployment and privacy. No existent technique addresses all these requirements. In particular, both inter-vehicle and vehicle-to-roadside wireless communications present different characteristics that should...
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