The three rsdi groups of asean countries and Sweden

The weightings in this approach are determined according to experts judgment. The principle of this approach is to submit checklists to a group of experts in road safety. They will be asked to mark the weights for different indicators and to assess the necessity of each indicator subjectively. The results (responses) will be transformed to 

There are different techniques that can be applied in assessing the survey results and opinions of experts such as the Multi-Criteria Analysis (Mendoza et al. 1999) and Delphi Technique (Harold et al. 1975). For now and because of the lack of our survey data, 1 do not discuss these methods further here. 

RSDI range RSDI Rating Less than 20% 10% 20-40% 30% 40-60% 50% 60-80% 70% More than 80% 90% 

This approach depends on the expert panel and it requires a criterion assuming that the expert panels are recognised as fully qualified experts in the area of road safety. Besides, the combined information they have is good enough to judge on the issue we are dealing with. Moreover, it should be clear that it would be difficult to obtain the opinions of experts regularly and frequently. 

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Figure 5.4 The three RSDI groups of ASEAN countries and Sweden...

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