Grade impact investigation during stopping sight distance determination on 3D road environment

• Autorzy: Mavromatis Stergios , Matragos Vassilios

Identyfikatory

DOI

10.14254/jsdtl.2021.6-1.6

• Języki publikacji: EN

Abstrakty

EN

In the present research, Stopping Sight Distance (SSD) adequacy is assessed through a three-dimensional approach, which associates road visibility in terms of grade effect. SSD adequacy is controlled through the difference between the available and the required SSD. The research is focused on a right turned, two lane rural road, associated with a crest vertical curve for a given speed value. The road design is in accordance with the Greek Road Design Guidelines (OMOE-X, 2001) by utilizing the control design parameters for a design speed of 80km/h and a wide range of grade values, where the vertex point of the crest vertical curve is positioned at fixed points along the road axis. The investigation is based on a vehicle speed exceeding the design speed by 20km/h. In total 1874 cases of compound alignments were examined and the results revealed that the available sight distance is decreasing while grade increases. The vehicle speed on the tangent sections was proved unacceptable in terms of providing SSD adequacy. However, it was found that SSD adequacy is granted when the vertical vertex falls inside the circular arc of the curve’s horizontal alignment, while the optimum area is defined shortly before the horizontal vertex point.

Słowa kluczowe

EN

stopping sight distance; 3D road environment; grade

• Wydawca: Fundacja Centrum Badań Socjologicznych ; Scientific Publishing House "SciView"
• Czasopismo: Journal of Sustainable Development of Transport and Logistics
• Rocznik: 2021
• Tom: Vol. 6, No. 1
• Strony: 72--80
• Opis fizyczny: Bibliogr. 16 poz., rys., wykr.

Twórcy

autor

Mavromatis Stergios

• Department of Transportation Planning and Engineering, National Technical University of Athens, 5 Heroon Polytechniou Str., GR - 15773 Athens

• https://orcid.org/0000-0002-8343-3471

autor

Matragos Vassilios

• Department of Transportation Planning and Engineering, National Technical University of Athens, 5 Heroon Polytechniou Str., GR - 15773 Athens

• https://orcid.org/0000-0002-9658-5650

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).