Evaluation, devaluation or reevaluation of the high speed train lines ?[Evaluation, dévaluation ou réévaluation des lignes à grande vitesse ?]

The disappointing commercial results of the northern high speed train, associated with a global crisis of railway transport in France at the beginning of the 90', have led to call into question all the projects of new high speed train lines. All of them have been revalued in the Rouvillois report which concluded to the impossibility of building new high speed lines without public finances support. Given the fact that the most profitable lines are already built, private funding alone is not sufficient. But this obviousness must not lead to abandon all the projects. Some of them have indeed a good financial profitability and even a very good social return. But in order not to penalize the whole high speed train system, priority must not be given to the less profitable lines. And it would be better to avoid a zero sum game between the owner of infrastructure and the running company.