Koelnmesse Help (FAQ English) General information Travel NUNAV Navigation App NUNAV Navigation App What is NUNAV?Why does NUNAV eliminate the need to search for a parking space?Does NUNAV navigation simply move traffic to side streets?How is the navigation feature used?Which destination should I enter?Which user role should be selected?Can I begin my journey with NUNAV outside Germany?How do I get support or provide feedback to Koelnmesse?How is my data used? ×