Oalley is a map that shows you how far you can go for a given time or a chosen distance.
Depending on the means of transport chosen, Oalley takes into account several criteria (speed on each type of road (city, countryside, motorway), timetables for public transport, cycle paths, etc.) and draws the limit area that you can reach for the specified distance or travel time.
Time zones are also called isochrones or catchment area.