In Dortmund, the Signal-Iduna-Park often hosts football matches with more than 80,000 visitors. The Westfalenhalle Dortmund, the largest trade fair venue in North Rhine-Westphalia with its modern congress centre and over 1,000 regional and national conferences and congresses per year, is located directly next to the Signal-Iduna-Park. Not only individual events, but often also parallel events, which take place at these two locations, lead to temporary restrictions affecting the entire road network. Therefore, PTV Transport Consult was commissioned to update the transport concept for Signal-Iduna-Park and Westfalenhallen.