In recognition of the growing importance of multimodal planning, PIARC Technical Committee 1.1 Road System Economics has researched multimodal appraisal, to publish recommendations for users. These recommendations, as set out in this report, refl ect the different needs of developed countries, countries in transition and developing countries.
The starting point in this work, which commenced in 2004, was a review of international systems. The review was divided into two stages: fi rstly, an international screening of current practice, and secondly, detailed case studies
of a number of the most advanced systems.