Section II

Obtaining the Optimum Block Length of the Chet Network: An At-Grade Transportation Network without Signalized Intersections, Roundabouts, or Stop Signs

Authors:

S. P. Liyanage
Email S. P. Liyanage
S. Pravinvongvuth

Abstract

A typical at-grade transportation network forms a grid consisting of intersections. The majority of delays and accidents in the network are caused by traffic movements through those intersections. Even though the use of controlling systems gets rid of conflict movements at intersections, it increases the congestion due to capacity reduction. To overcome this important issue, designing zeroconflict transportation network is essential. A novel design of an at-grade transportation network without signalized intersections, roundabouts, or stop signs was proposed. It is called the Chet network, which can be used as an alternative form of urban streets for a built environment. Within the Chet network, a car can move from one place to another without facing any conflict movement at any junction while still maintain the low cost of at-grade infrastructure. The network is composed of hexagon blocks tiling together with a unique arrangement of one-way or two-way directional links to avoid conflict movements at all junctions. This study aims further to explore the concept of the Chet network by constructing several testing cases in microscopic traffic simulation to obtain the optimum block length in forming hexagons in the Chet network, which is an important step in moving forward to implementation in real-life.

Keywords:

Hexagonal network topology Traffic flow analysis Transport dynamics Simulation of traffic system Network design

Published on 31 Dec 2018

Peer Reviewed