A first limitation in traffic and transportation planning is due to methodological imperfections, resulting in a gap between what is promised and what is actually laid down in the plans. A second factor limiting the output of traffic and transportation planning is the lack of interaction with related policy issues. Land use policy, changes in society, economic developments and financial aspects are the most important of them. The importance of the mobility problem urges both an internal methodological improvement over and above the normal effort, and a more comprehensive attitude towards related issues, beyond the regular boundaries. This is an essential condition for the borderline between saying and doing in traffic and transportation planning to dissolve. (A)
Samenvatting