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Headway is the distance or duration between vehicles in a transit system. The minimum headway is the shortest such distance or time achievable by a system without a reduction in the speed of vehicles. The precise definition varies depending on the application, but it is most commonly measured as the distance from the tip (front end) of one ...
So, for example, if a route is 20 kilometres (12 mi) with 1600 metres of climb (as is the case on leg 1 of the Bob Graham Round, Keswick to Threlkeld), the equivalent flat distance of this route is 20+(1.6×8)=32.8 kilometres (20.4 mi). Assuming an individual can maintain a speed on the flat of 5 km/h, the route will take 6 hours and 34 minutes.
In most cases, the distance between two nodes in the TSP network is the same in both directions. The case where the distance from A to B is not equal to the distance from B to A is called asymmetric TSP. A practical application of an asymmetric TSP is route optimization using street-level routing (which is made asymmetric by one-way streets ...
Extra time should be added for wet, rainy, slippery, foggy or other weather situations accordingly. [8] For heavy duty commercial vehicles it is recommended 4-6 seconds following distance for speeds under 30 mi/h (48 km/h), and 6-8 seconds following distance for speeds over 30 mi/h (48 km/h). [ 9 ]
MapQuest's original services were mapping (referred to as "Interactive Atlas") and driving directions (called "TripQuest"). [ 5 ] Sensing the emerging demand for spatial applications on the Internet, and with crippling network latency in Lancaster, the executive team of Barry Glick and Perry Evans moved MapQuest to the up-and-coming LoDo area ...
The minimum distance d is the distance along a great circle that runs through s and t. It is calculated in a plane that contains the sphere center and the great circle, , =, where θ is the angular distance of two points viewed from the center of the sphere, measured in radians.
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Isochrone maps have been used in transportation planning since at least 1887. [21] [22] Isochrone maps in the context of transport planning are essentially maps of accessibility where travel time is used as the cost metric. Isochrone maps can be created for different modes of transportation, [23] e.g. foot, bicycle, motor vehicle. Put simply ...
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