The alignmentAlignment of a road is three-dimensional and must therefore always be viewed spatially. However, the processing and presentation of the road design is mainly done separately in the site and elevation plan and in the cross section. The overlapping of the horizontal and vertical design elements, including the cross-sections, creates spatial elementsSpatial elements. These spatial elementsSpatial elements and the spatial element sequencesSpatial element sequences resulting from their combination can be illustrated in the form of perspective images or models. The driver’s perspectiveDriver's perspective is the only useful perspective representation for traffic assessment of a road.

    The driver orients himself to the spatialAlignmentspatial course of the road and adjusts his driving behaviour accordingly. The spatial alignment thus has a significant influence on road safetyRoad safety. The spatial course of the road is determined by the carriageway and the adjacent side area. Timely recognition, comprehensibility, clarity and unambiguousness of the routing are important for good orientation and an appropriate choice of speedSpeeds based on this. Orientation is decisively supported by the road equipment such as markings and signs as well as by guiding devices such as delineatorsDelineators and traffic guidance systems. Furthermore, it is possible to improve orientation and to integrate the road harmoniously into the surrounding landscape by appropriate design of the surroundings through terrain modelling or plantingPlantings. Especially the course at crestCrest curve curves and in non-visible curve areas is to be clarified with vertical elements. However, a sufficient safety distance must be ensured.


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    Title :

    Spatial Alignment


    Contributors:

    Published in:

    Publication date :

    2022-11-30


    Size :

    13 pages




    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English




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