In this paper arguments are given in favour of the use of Early Warning Systems in planning. The objectives of these systems are to improve:1) the controlability of the effectiveness of measures and 2) the apprehension of the relation between cause and result.
In: Colloquium Vervoersplanologisch Speurwerk 1981 : nieuwe tendensen in de vervoersplanologie : verslag van een bijeenkomst gehouden te Den Haag op 5 en 6 november 1981, p. 511-528, 2 fig., 33 ref.
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