A risk assessment methodology is used in France to help choosing the dangerous good vehicles authorised in tunnel. This methodology was updated in order to better take into account ADR categories principle and to integrate feedback experience of applications. CETU has proposed two major modifications. Firstly, the method, which was mainly based on a binary logic (dangerous goods authorised or not), now makes it possible to adopt intermediate solutions in accordance with the principle of ADR categories. Secondly, the analysis is now systematically multi-criteria whereas, previously, it was only multi-criteria if the risk of death from accident with release of dangerous goods was not significant. These two proposals were discussed with specialized companies and agreed. Then, CETU has undertaken the development and has taken into account tests performed by specialised companies on intermediate versions. The new methodology is now operative and integrate the management of unavoidable uncertainties. It mixes systematic approach and scenario-based approach in the sense of [1] and also quantitative and qualitative assessments.