University of Twente Student Theses


Deducing design rules for junctions in urban areas based on multiple objectives

Lodeweges, H.J. (2016) Deducing design rules for junctions in urban areas based on multiple objectives.

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Abstract:The performance of junctions is an important part of the performance of a traffic network. Therefore, the selection of junctions should be carried out with great care. Currently, most junction design rules used to determine the preferred main junction type and lane configuration require junction performances as input. Junction performances are obtained through modelling, which is too time-consuming to perform for many junction design alternatives. Therefore, a quick selection of feasible junction designs is made first, using only the expected traffic demand. This first selection is based on operational performance, neglecting other indicators, resulting in well performing junction designs being easily eliminated. Therefore, a new set of junction design rules is desired. These new rules should be based on a combination of multiple performance indicators, while requiring only the traffic demand and available space as input. This paper proposes a methodology for the deduction of a new set of design rules. A combination of non-compensatory multi criteria analyses and decision tree training is used to derive junction design rules using operational, safety and emission performances of 24 different junction designs, for a large number of traffic demand patterns. Resulting design rules allow decision makers to make a quick first selection of feasible junction designs, showing the overall feasibility of the different designs, together with an insight in the performances of the junction types on the different indicators. The design rules show an accuracy of 89.9%.
Item Type:Essay (Master)
Faculty:ET: Engineering Technology
Subject:56 civil engineering
Programme:Civil Engineering and Management MSc (60026)
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