Abstract: A method of determining a journey guidance policy for a journey between a first location and a second location. The method involves obtaining destination objectives comprising an efficiency objective indicative of a desired energy efficiency for the journey and a punctuality objective indicative of a desired time of arrival at the second location. A journey guidance policy is determined based on the destination objectives, where the journey guidance policy comprises recommended actions to be taken along the journey, and each recommended action comprises a route action and a corresponding speed action.

Abstract: An electronic device for determining a journey guidance policy for use in guidance on a journey from a first location to a second location. The electronic device is configured to obtain an end objective indicative of an objective to be achieved at the end of the journey at the second location. A plurality of probabilistic states for the journey are determined, where, each probabilistic state comprises: a state location, indicative of a geographical location; and a progress metric. Based at least in part on the plurality of probabilistic states and the end objective, the journey guidance policy is determined. The journey guidance policy comprises the plurality of probabilistic states and a recommended action corresponding to each of the plurality of probabilistic states, where each recommended action comprises a speed action and a navigation action.