Assisting the older driver - SWOV

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Theoretical framework to identify needs for support future. Section 5.3 focuses on road design elements that allow for the functional limitations of the older driver, whereas Chapter 7 discusses relevant in‐car driver assistance systems and the conditions they should meet to actually improve the safety of older drivers. 75
Assisting the older driver 5. Intersection design and the older driver The aim of this chapter is to identify those characteristics of intersections that may contribute to the over‐representation of crashes at intersections in the total number of crashes that older drivers are considered legally responsible for. These characteristics were traced by looking at the functional limitations of older people and the demands they make on intersection design. It was assumed that if the design elements of an intersection allow for the functional limitations of older people, the crash involvement of older drivers will be low. If they do not allow for the older driver’s functional limitations, passing that intersection will be difficult for older drivers, and the crash involvement of older drivers will be higher than average. The validity of these assumptions was tested by inspections of intersections that have different shares of crashes involving older drivers. In addition, a literature review was carried out on intersection design elements that appear to take the functional limitations of older drivers into account. The intersection inspections indicated that priority regulation is a predictor of the crash involvement of older drivers. Crashes involving older drivers occur more often at yieldcontrolled intersections than at intersections with traffic lights. The literature review revealed that the following intersection design elements appear to allow for the older driver’s functional limitations: a positive offset of opposite left‐turn lanes, roundabouts, a high in‐service contrast level for road markings, background plates for traffic lights, long sight distances, advance warning signs, and protected‐only operations of traffic lights. However, the actual effect that they have on the safety of older drivers has hardly been tested yet. 5.1. Introduction In this chapter, road design elements are discussed that appear to play a role in the difficulties that older drivers encounter in traffic (see Table 4.2). Given the overrepresentation of older drivers among crashes at intersections, the main focus is on intersection design elements. Two strategies are followed to look for intersection design elements that play a role in the difficulties that older drivers encounter: 1) a comparison of the characteristics of intersections that have different shares of crashes involving older drivers, and 2) a review of the literature on intersection design elements that take into account the functional limitations that are common in the older age group. The next two sections describe the results of these two strategies. In the last section of this chapter (Section 5.4), conclusions are drawn about adjustments to intersection layout that have the potential to improve the safety of older drivers. 76
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3.2.3. Conclusions regarding future
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Advanced driver assistance systems
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Assisting the older driver Appendix
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Samenvatting Samenvatting Dit proef
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Samenvatting Verkeersveiligheidsmaa
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Samenvatting jongere automobilisten
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Curriculum Vitae Curriculum Vitae R
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Assisting the older driver Nottingh
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