Routing with Estimated Time of Arrival

This use-case focus on real-time driving and notification. It describes how to compute and update a route A route corresponds to a path of a vehicle through the underlying transport network. The main attributes of a route are the distance and the time that the vehicle travels along the path. using the PTV xRoute service. The goal of ETA ETA (Estimated Time of Arrival) is the time when a ship, vehicle, aircraft, cargo or emergency service is expected to arrive at a certain place. calculation is the real-time route-related information update of a driving vehicle The term vehicle describes what is being routed or planned for. Vehicles are used in route calculation, distance matrix calculation and effectively also in tour planning. In route calculation, vehicle properties like overall size, weight and speed are in focus. In tour planning, it is vehicle properties like capacity and availability. Commonly a vehicle is motorized, like a truck - including its trailer or a car. However also a bike or even a pedestrian are included in this definition..

Benefits

• Using the ETA calculation will ensure a more precise real-time vehicle navigation than conventional routing.
• Faster calculation than multiple conventional routes requests.

Prerequisites

Please ensure following prerequisites are fulfilled before you start with the use case:

• Installed and licensed PTV xRoute service

Programming Guide

This sample simulates the principal use case of this module : update the time of arrival depending of the position of the vehicle.

• A first route request is sent, simulating an itinerary prevision. Both encodedPath and polyline A polyline is a continuous line composed of one or more line segments given as a set of tuples with x,y and optional z coordinates. are requested in the resultFields. Polyline is for map dislay and encodedPath will be needed to build a PathWaypoint. The result of this first request is the blue route on the map.
• The second route request stands for a route recalculation according to a simulated vehiclePosition. A vehiclePosition of type PositionEnRoute is sent. It simulates a truck with a driver driving to the next destination. It contains 3 information:
  • A simulated vehicle position (ex: GPS coordinates).
  • A simulated heading (ex: In-board Accelerometer).
  • The next waypoint A waypoint is a geographic location used to specify start, destination and possible stopovers for a route. to serve. Here, there are only two waypoints.

Here is the same route with the same vehiclePosition, with a different heading. Due to this new heading, the linking to the road network is different.

Related Topics

The following topics might be relevant for this use case.