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The improved Floyd algorithm is presented in order to solve the problem of high computational complexity when the shortest path of a large number of nodes in urban road network is computed using traditional Floyd algorithm. And the function of route selection based on the improved Floyd algorithm is realized by simulation. In the algorithm, firstly, the various nodes will be compared and the nodes...
Navigation electronic map, one of the electronic maps or databases which contain spatial position geographical coordinates can be combined with spatial positioning system and guide man or means of transportation accurately to arrive from place of departure to place of destination with spatial information service function of location-based services and internet application. With the ever-increasing...
Common car navigation systems only provide routes within the road network. Dirt roads are out of the scope of these widespread systems. In this paper we present Woodtracker, an approach to provide off-road navigation for the timber industry of the federal state of Brandenburg. The basic principle of Woodtracker is that users of the system are producers as well as consumers of navigation information:...
Car navigation systems are now widely used as a component for intelligent transportation systems. Route planning is the most important task of car navigation systems. Though modern car navigation systems incorporate various road information, even dynamic information, to generate optimal route, but they are yet to present routes according to driver's requirements or preferences. Most of the car navigation...
Vehicle trajectories are widely used in varies of applications. As to car navigation applications, typical usages of trajectories include correcting the digital maps, finding out the traffic jams, looking for the locations of cars. In this paper, it is assumed that trajectory data of expert drivers implies ldquobest practicerdquo routes, which will be helpful to naive drivers during driving. Therefore...
Nowadays, many people depend on the guidance provided by car navigation devices to travel to the destination. Generally, several routes are possible for a given origin-destination (OD) in a road network. Often car navigation devices provide the minimum traveling time or distance route. However, this route may not always be comfortable for users to follow. Out of the several available routes, users...
Efficient shortest path algorithm in road networks plays an important role in car navigation system. This paper brings forward the bidirectional A* algorithm based on the hierarchical thinking. Simultaneously, improved the data structure of A* algorithm and the expanded mode of nodes, greatly reduced the running time and scale of algorithm search, enhanced the speed and accuracy of path planning.
Traffic congestion on major roadways costs our nation billions of dollars in lost earnings, wasted fuel consumption, injury and loss of human life. Providing motorists with real time roadway conditions is essential to mitigating traffic congestion. We propose a novel real-time messaging system that can be used to communicate imminent traffic conditions to motorists. Having such information can allow...
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