In the autumn of 2020, Île-de-France Mobilités launched, in conjunction with the GART (Groupement des Autorités Responsables des Transports), the UTP (Union des Transports Publics et ferroviaires) and the Métropole du Grand Lyon, a working group comprising nearly 80 contributors (public and private data reusers and producers from around forty different organisations) with the aim of defining a Standard license for sharing mobility data.
On December 1, 2022, Île-de-France Mobilités has implemented this licence. On the PRIM portal, it applies to certain data produced by Île-de-France Mobilités and covered by the Mobility Organisation Act (LOM).
Objectives of the mobility license
The implementation of the mobility license responds to two major challenges:
- Facilitate the reuse of mobility data by removing certain constraints on the obligation to reshare data.
- To ensure that the uses made of this data are in the general interest.
Among the main priorities of the Mobility Orientation Law (LOM) is the "development of the use of the least polluting mobility and shared mobility on a daily basis, in order to strengthen the dynamic of development of public transport, alternative daily mobility solutions to the private car and active mobility for the benefit of the environment, health, safety and competitiveness".
Thus, the public interest within the meaning of this licence is understood as follows:
- Guarantee safety for all trips.
- Work to reduce road traffic and congestion on public roads.
- Promote the development of public transit and active modes of transportation.
- Work to protect the environment and reduce greenhouse gas emissions.

Implications of the mobility license for the data reuser
Based on the ODbL license, this mobility license adds major principles, namely:
- The possibility of requesting the identification of the user in order to facilitate communication between Île-de-France Mobilités and data reusers. The user must be logged in to their account on the PRIM portal in order to be able to use the APIs and datasets subject to this license.
- The Special Conditions of Use which limits the identical sharing of derived databases.
- A commitment to compatibility with the reference documents in terms of the mobility strategy applicable in the territory : the Master Plan of the Île-de-France region (SDRIF) and the Urban Travel Plan of Île-de-France (PDUIF) in force until the adoption of the next Mobility Plan, still in consultation for the time being. In the event of non-compliance of the re-use of data with the principles published in these reference documents, the burden of proof would lie with the organising authority.
When this new license comes into effect, from December 1, reusers of the PRIM portal will need to have an account on this portal and be logged in in order to view the datasets available under this license.
No changes are expected for access to other static data that will remain accessible without an account, nor for APIs that already require you to be logged in to be able to use them.

The datasets and APIs concerned by the mobility license
For the time being, only theoretical or real-time transit data from the Île-de-France Mobilités network are concerned by the mobility licence. Thus, on the PRIM portal, this license concerns all APIs as well as the following datasets:
- Scheduled schedules on the public transport line.
- Scope of real-time data available on the Île-de-France Mobilités exchange platform.
- Conditionof the elevators.
No changes are expected for the other data on the platform.
A mobility license implemented to establish a link with our data reusers
The implementation of the mobility license will allow us to establish a link with the platform's data reusers. Indeed, better identifying them will allow us to get in touch with them if necessary and to listen to their recommendations concerning PRIM, its features and its content.
Thus, we invite our reusers not to restrict themselves. On the contrary, we can only encourage them to continue to make use of the data made available to them on PRIM!
To find out more, do not hesitate to consult the mobility license in its entirety, published on the Fabrique des Mobilités, by following this link.
For all your questions or comments, the PRIM team of Île-de-France Mobilités is available at the email address: [email protected] or on the instant discussion forum "Slack" of the "PRIM community".