title: Highway on-ramp control.
abstract: We study the phase transition on a highway induced by the fluctuations of on-ramp flow. The highway traffic is provided by a hydrodynamical model. We analyze the characteristics of perturbations to induce congestion near on ramp. The phase boundary is obtained. A scaling relation is revealed. We also analyze the time evolution of the local density profile. Conventional control mechanisms to regulate the on-ramp flow are examined. A control scheme is proposed to suppress the congestion.
authors: Department of Physics, Chung Yuan Christian University, Chung-li, Taiwan.
authors: Ding-Wei
authors: DW
authors: Huang