RT info:eu-repo/semantics/article T1 A Series of Vertical Deflections, a Promising Traffic Calming Measure: Analysis and Recommendations for Spacing A1 Pérez Acebo, Heriberto A1 Ziolkowski, Robert A1 Linares Unamunzaga, Alaitz A1 Gonzalo Orden, Hernán K1 Traffic calming measure K1 Spacing K1 Speed prediction K1 Speed humps K1 Raised crosswalk K1 Raised intersection K1 Speed cushion K1 Road safety K1 Urban area K1 Ingeniería civil K1 Civil engineering K1 Transporte K1 Transportation AB Traffic calming measures (TCM) are placed in urban areas to improve road safety, andamong them, vertical TCMs are widely employed. Many researches are focused on the influenceof the geometry of each measure on speed reduction, but it is demonstrated that drivers forget itseffect 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 ofthis paper is to analyze the adequate distance between TCMs. Various streets with variable distancesand different vertical TCMs were evaluated in Poland and Spain, including raised crosswalks, raisedintersections, speed humps and speed cushions. The intermediate point between two TCMs wasselected as the place where the maximum speed is achieved. Results showed that there was agood correlation between the speeds at intermediate points and the distance between TCMs, with adetermination coefficient around 0.80. For an 85th percentile of the speed under 50 km/h, a maximumdistance of 200 m between TCMs is recommended, and for a value of 40 km/h, 75 m. PB MDPI YR 2020 FD 2020-05 LK http://hdl.handle.net/10259/7653 UL http://hdl.handle.net/10259/7653 LA eng NO This research was funded by “Eramus+ programme—Call 2016—KA1—Mobility of Staff in higher education—Staff mobility for teaching and training activities.” DS Repositorio Institucional de la Universidad de Burgos RD 28-mar-2024