Re: Navigation app - powered by CycleStreets, running on iPhone, with voice navigation
George Coulouris
Richenda asked specifically for CycleStreets routing, probably because she has had good experience with routes obtained from cyclestreets.net and the many apps that rely on it.
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The CycleStreets routing engine is a work of great sophistication that uses data from the OpenStreetMap database (as do all routing apps except Google and Apple I think). Not all routing engines are equal, even when they use the same mapping database because there are so many elements that can taken into account and each is given a weight in decisions about the best cycling route, e.g. number of lanes, traffic signals, junction treatment, quality of surface. Until quite recently, Cycletreets.net had no serious rival for decent cycling routes and it still has one rival - cycle.travel. cycle.travel also uses the OpenStreetMap database and produces routes of similar quality to cyclestreets.net, but it has a more up-to-date user interface that allows you to interact with a route to make it follow different roads etc. None of the above answers Richenda’s request for an iPhone app that gives instructions by voice. That is simply an add-on that none of the iPhone app developers using the cyclestreets routing engine have chosen to include. George C
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