A. Provided you have subscribed to the annual update service, the only additional cost will be the cost of downloading the data. This is a very small charge and will appear on your mobile phone bill as data charges. At present the average cost is 1 cent per 1 KB. We anticipate an average download will be approximately 2 KB so it would cost approximately 2 cents per download. The number of downloads per month will depend on the number of speedlimit changes.