In this study the minimum conditions for 30 km/hour areas in the Netherlands were examined. These conditions were emphasised with a view to a general introduction in the short term, if possible, as the first phase of the `sustainably safe' implementation plan. Where necessary, additional measures can be made in a later phase. Attention was paid to the reduction of through traffic, and to lowering the speeds driven at those locations where the need was the greatest. Recommended measures are, among other things: (1) adjusting the accessibility structure; (2) reducing the number of connections; (3) reducing speeds driven; (4) regulating the right of way; and (5) clearly marking the entrances to the 30 km/hour areas. A lot of attention was also paid to citizen participation. A specific problem was noted that a number of roads to be included in a 30 km/hour area cannot be made suitable in the first phase (indicated as `grey roads'). With this approach, a positive road safety effect is expected during the opening phase. However, sufficient attention should be paid to that problem after the opening phase. This can be done by taking additional measures to clear up the `grey roads'. (A)
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