Those who drive to an event using a standard navigation system will normally enter the point of interest (e.g. "trade fair grounds") and then have to search for a parking space once they have arrived at the destination. NUNAV provides navigation to a free parking space, thus making it unnecessary to spend time searching. If a parking space is occupied, it is automatically switched off in NUNAV and users are redirected to the next available parking space. There is no need to search for a parking space and there are no traffic jams, because NUNAV detects all road closures and traffic disruptions on the way to Koelnmesse and intelligently distributes the traffic over the entire available road network.