Many cities have areas comprising narrow streets in which traffic is complicated. Some of these cities decided to restrict traffic in these areas, implementing a toll fare (i.e. London city center) or allowing only the residents in these areas to access them with their vehicles (i.e. some neighbourhoods in Barcelona), so these areas became basicly pedestrian. In those cases that a physical barrier exists to prevent non-authorised vehicles accessing to restricted areas, an RFID could be used to verify if the vehicle approaching is allowed to pass through. The system could be improved introducing a time-based system, so some kind of vehicles, such as delivery vans, could access these areas depending on the time it would be.
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