Transport on demand To serve the needs for residents who are some distance from the current transport network in the urban areas of the region, Ile-de-France Mobilités has developed a simple and practical solution with a new regional Transport on Demand service. Transport on Demand in Ile-de-France Read text transcription View larger image Transport on Demand in Ile-de-France At your service What is transport on demand? In short, transport on demand is a minibus which only runs when a trip is booked. How does it work? So that this service is accessible to everyone, Ile-de-France Mobilités has developed a new, simple and comprehensive tool for users.