Abstract: A method for generating closure data relating to closure of a stretch of navigable elements during a target time period, wherein the stretch includes one or more navigable elements of a network of navigable elements within a geographic area, wherein the method includes: identifying a set of source navigable elements of the network and a set of destination navigable elements of the network in a region around the stretch; generating one or more traffic flow indicators for the stretch, each traffic flow indicator being for a respective test time period in a set of one or more test time periods within the target time period, each traffic flow indicator being based on a comparison of a respective reference traffic flow measure for the stretch and a respective closure traffic flow measure for the stretch, wherein: (a) the reference traffic flow measure is indicative of a number of first journeys during a reference time period for the test time period relative to a number of second journeys during the reference time

Abstract: There is provided a method for generating traffic data indicative of a traffic volume and/or traffic density within a navigable network in an area covered by an electronic map, the electronic map comprising a plurality of segments representing navigable elements of the navigable network. The method generally comprises obtaining data indicative of a count of devices associated with vehicles traversing the navigable element represented by the segment in respect of a given time, wherein the count of devices is based on positional data and associated timing data relating to the movement of a plurality of devices associated with vehicles along the navigable element represented by the segment; and using the determined count data and an scaling coefficient to obtain data indicative of an estimated traffic volume for the segment in respect of the given time, wherein the scaling coefficient is time dependent.