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  • 1 Széchenyi István University Department of Transport Infrastructure and Municipal Engineering Egyetem tér 1 H-9026 Győr Hungary
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The safe speeds and also the general speed limits are quite different outside and within built-up areas. If it does not follow from the road design, whether the given scene is within or outside built-up area, drivers are uncertain about their appropriate speed.This paper shows two approaches to assess the degree of uncertainty of the drivers. The first was a questionnaire survey of requested speeds at various road scenes. In the second method, the recognition process of drivers was simulated by image classification software.Output indicators of these methods (standard deviation of speeds and certainty score) can serve as tools to identify road scenes and road elements leading to uncertain and therefore risky situations.

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