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Analysis of the impact of population ageing and territorial factors on crosstown roads safety: the Spanish case study

机译:人口老龄化和地域因素对过市区道路安全的影响分析:西班牙案例研究

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The recent spike in the accident rate of urban Spanish roads, after years of negative growth, has been accompanied by a serious increase in accidents in a specific type of road: crosstown roads (called “travesías” in Spanish). Thus, in 2013, there was a 47% increase in accidents with casualties in these routes over 2012 data; in 2014, an 88% increase over the previous year and, although 2015 data reflect a slight decline (-3%), figures are still worrying. Moreover, these routes have always shown a higher fatality rate than the rest of urban roads.The road safety analysis of these routes is complicated due to the diversity of the features, the dispersion of the data and the complete lack of related literature. The main target of this paper is the road safety characterization of these specific routes in order to explain why the accidents in these routes happen, their severity and their relation with the ageing process in Spain, where in 2012 the population over 65 years old was 17%, this ratio being even higher in small cities. Spanish General Directorate of Traffic (DGT) provided database (2006-2013) on accident statistics and the methodology was focused on cluster analysis, identifying 3 homogeneous groups of crosstown roads. With the final clusters, different behaviour patterns towards road safety were modelled and analysed, paying special attention to “vulnerable road users” (according to DGT definition). Results revealed the clear influence of the age variable in two of the clusters, but also some shortcomings in the database, which collects information on some routes that do not fulfil the conditions to be considered “passing routes”.
机译:经过多年的负增长,最近西班牙城市道路的事故率激增,同时伴随着特定类型的道路事故的严重增加:过街道路(西班牙语中称为“travesías”)。因此,与2012年的数据相比,2013年这些路线中有人员伤亡的事故增加了47%; 2014年比上一年增长了88%,尽管2015年的数据略有下降(-3%),但数字仍然令人担忧。而且,这些路线的死亡率始终比城市道路上的其他道路更高。由于特征的多样性,数据的分散以及完全缺乏相关文献的原因,这些路线的道路安全分析非常复杂。本文的主要目标是对这些特定路线的道路安全进行描述,以解释为什么这些路线中的事故发生,其严重性以及与西班牙老化过程的关系,西班牙在2012年有65岁以上的人口为17岁%,在小城市甚至更高。西班牙交通总局(DGT)提供了有关事故统计的数据库(2006-2013年),该方法的重点是聚类分析,确定了3个同质的过街道路组。在最后的集群中,对道路安全的不同行为模式进行了建模和分析,并特别注意“弱势道路使用者”(根据DGT的定义)。结果揭示了年龄变量在两个集群中的明显影响,但数据库中也存在一些缺陷,该数据库收集了一些不符合被认为是“通过路线”条件的路线的信息。

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