2車線合流狭窄部の交通流に見るジレンマゲームに関する研究

摘要

A cell automata traffic model based on Stochastic Optimal Velocity (SOV) model with an appropriate open boundary condition at both in-coming and out-going edges was established. The model can plausibly reproduce the fundamental diagram of a traffic flow observed in Japanese high way shown by Sugiyama. The model was applied to an analysis for a traffic flow of 2-to-l lane junction considering co-existence of C-strategy agents always driving in a first lane and D-strategy agents driving in a tower density lane either the first or second lane. In both High-density and Jamming phases, D-agent's interruption into die first lane makes a heavier traffic jam bringing a lower social efficiency, in which we can observe the so-called Prisoner's Dilemma game structure.%実在の高速道路における基本図を再現する確率最適速度モデル(SOV）を基礎とする開放端セルオートマタ交通流モデルを構成した．これを2車線狭窄部合流問顔に適用し，この物理機構にゲーム性が存在すること，すなわち流動状態に応じてTrivialゲームか囚人のジレンマゲームの相が創発することがわかった．