4. Choose the best compromise

The choice of the best compromise is made through a cost/benefit analysis. This method is described on the Ministère de l’écologie, du développement durable et de l’énergie website (tabs : Home page > Risk prevention > Technological risks and transport of dangerous goods > Guide for planners > Focus on... > Cost-benefit analysis > Cost-benefit analysis).

Four criteria are taken into account:

• technical and normative (effectiveness in terms of risk reduction), with control of sources and impacts (through elimination of the source and/or deactivation of transfer routes);

• economic (costs including studies, expert appraisals, works, easements, construction measures,...