Ramp metering is regarded as one of the best control strategies for freeway traffic system and is widely used.

在高速公路控制方法中，入口匝道控制是应用最广、效果最好的一种控制方法。

youdao

Abstract: Aiming at the nonlinear and time-varying characteristics of freeway traffic system, a fuzzy self-adaptive PID controller is designed and applied to freeway ramp metering in this paper.

摘要：针对高速公路交通系统的非线性、时变特性，设计了一种模糊自适应控制器，并将其应用于高速公路匝道控制系统。

youdao

The macro model of traffic flow in freeway is a high order, nonlinear and time variant system which makes the problem of its identification become very difficult.

高速公路交通流模型是一个高阶非线性时变系统，这使得该模型的辨识问题成为一个非常困难的问题。

youdao

Before the Games of the XXIII Olympiad, which were held at various locations in and around Los Angeles, officials tried to instill traffic panic in local residents, encouraging them to shift their commuting schedules and avoid the freeway system whenever possible.

FORBES: Carmageddon Is Upon Us!