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Featured Application: This work provides a tool for determining the adequate spacing between vertical traffic calming measures as a function of the target speed in the segment. Traffic calming measures (TCM) are placed in urban areas to improve road safety, and among them, vertical TCMs are widely employed. Many researches are focused on the influence of the geometry of each measure on speed reduction, but it is demonstrated that drivers forget its effect and speed up after it. Therefore, placing consecutive TCMs can help to maintain a safe area. However, scarce literature can be found about the adequate spacing between them. Hence, the aim of this paper is to analyze the adequate distance between TCMs. Various streets with variable distances and different vertical TCMs were evaluated in Poland and Spain, including raised crosswalks, raised intersections, speed humps and speed cushions. The intermediate point between two TCMs was selected as the place where the maximum speed is achieved. Results showed that there was a good correlation between the speeds at intermediate points and the distance between TCMs, with a determination coefficient around 0.80. For an 85th percentile of the speed under 50 km/h, a maximum distance of 200 m between TCMs is recommended, and for a value of 40 km/h, 75 m. [ABSTRACT FROM AUTHOR]

Road maintenance and rehabilitation are expected to meet modern society's demands for sustainable development. Full-depth reclamation with cement as a binder is closely linked to the concept of sustainability. In addition to the environmental benefits of reusing the existing pavement as aggregate, this practice entails significant technical and economic advantages. In Spain, in the absence of tests specifically designed to determine the behavior of recycled pavements stabilized with cement, these materials are treated as soil-cement or cement-bound granular material. This assumption is not entirely accurate, because this recycled pavement contains some bituminous elements that reduce its stiffness. This study aimed to obtain the relationships between flexural strength (FS) and the parameters that describe the pavement behavior (long-term unconfined compressive strength (UCS) and indirect tensile strength (ITS)) and compare the findings with the relationships between these parameters in soil-cement and cement-bound granular materials. The results showed that the similar behavior hypothesis is not entirely accurate for recycled pavements stabilized with cement, because they have lower strength values—although, this is not necessarily an indication of poorer performance. [ABSTRACT FROM AUTHOR]

Multiple previous studies at international level have examined the effects of land use policies regarding to sustainability, and particularly devoted to the induced private car mobility excess. However, it is remarkable the different urban planning tradition depending on the country or region. Thus, the Mediterranean urbanism has been generally featured by high or moderately high population and dwellings density, which has promoted the presence of pedestrians on streets. In this paper we analyse the case of Burgos city, as an example of mid-sized city in Spain. Although it isn't suffering sprawl symptoms, its local administration is trying to improve current modal share by increasing sustainable means of transport. The performed analysis includes population, dwellings density and absolute compactness, to check their influence in car trip generation. In coherence with previous studies, our results have shown a qualitative correlation between low densities and higher use of private car for the studied case. The effects of some urban planning policies are discussed as possible reasons of observed behaviour, serving as basis for future recommendations. • Density and compactness are studied and correlated for a Spanish city case. • Population and traffic generation data are combined in a GIS model using an innovative approach for a qualitative analysis. • Results have shown a clear correlation between low population density and high number of car trips for the selected case. [ABSTRACT FROM AUTHOR]