代写演讲稿ppt-交通信号控制器
代写演讲稿ppt-交通信号控制器。将信号控制器放置在一个位于交叉点一侧的黑色金属盒中，它是框架的“思想”。它是一个PC，转换数据从探测器环路和漫行侠按钮和改变信号灯根据其编程(阿尔伯塔运输，2009年)。根据主要的需要，控制器决定每个交通活动的绿色信号跨度，并控制从一个绿色和红色信号组合(称为阶段)到下一个的移动。它可以独立工作，也可以进行修改，以方便连续的交通信号的发展。接下来论文范文代写演讲稿ppt-交通信号控制器分享给留学生阅读。
The Traffic Signal Controller
Placed in a dark metal box on a side of the crossing point, the signal controller is the “mind” of the framework. It is a PC that converts the data got from the detector loops and strider push buttons and changes the signal lamps as per its programming (Alberta Transportation, 2009). As per the predominant needs, the controller decides the span of the green signal for every traffic activity and controls the move from one mix of green and red signals (known as stage) to the following. It can work in a detached way or be modified to facilitate with a progression of contiguous traffic signals.
The Yellow Signal
Traffic signals transform from green to yellow to caution drawing nearer drivers that the signal is going to change to red. The span of the yellow signal relies on the maximum speed set for the street. Many of the urban crossing points have a yellow light span of 4-6 seconds. The yellow signal is for stopping in the event that it is harmless to do as such. All the automobiles, going at as far as possible toward a green signal that transforms to yellow, ought to have adequate period to stop harmlessly or move out of the crossing point prior to the signal changes to red, if the driver has got into the crossing.
Full-red Period
The full-red phase is the period among the finishing of the yellow signal on a stage and the beginning of the green signal on the following stage. Full-red phase is utilized to give a harmless consent to automobiles that go over the stop line to the finishing of the yellow signal since they might be in risk of crashing into other automobiles or people on foot beginning in the accompanying stage (Ozawa, 2014).
The full-red phase is based upon the substantial extent of the crossings and pace restrictions of the street. Like the span of the yellow signal, the full-red period does not transform for the duration of the day.
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