無線地磁車輛檢測器  眾所周知，交通信號燈屬于交通安全產品中的一種，在道路的路口上進行安裝交通信號燈可以有效地緩解交通擁堵的情況，提高道路交通的管理，并有效地減少交通事故發生的機率。然而，在道路的路口是有很多形狀的，例如常見就包括有十字形路口、斜交路口、T 形路口、Y 形路口、環形路口等等。其中，T 形路口較為常見的一種。
As everyone knows the wireless geomagnetic vehicle detector, traffic signal lamp belongs to a kind of traffic safety products, the installation of traffic lights can effectively alleviate the traffic congestion on the road of the road, improve road traffic management, and effectively reduce the probability of traffic accident. However, in the intersection of the road is a lot of shapes, such as common on the intersection of the intersection, the intersection, T shaped junctions, Y shaped junctions, ring junctions, etc.. Among them, a common type of T junction.
一般情況下，T型路口主要包括有三種情況，為了容易理解，小編下面就用A、B、C三類表示。
Under normal circumstances, T type junctions mainly include three kinds of situations, in order to easily understand, Xiaobian below with A, B, C three categories.
T型路口交通信號燈圖解：
T type intersection traffic lights diagram:
A類：
Class a:
掉頭車輛不依賴紅綠燈情況，左轉時確保安全;
U-turn vehicles do not rely on traffic lights, turn left to ensure safety;
直行車輛依據紅綠燈通行(紅燈停、綠燈行);
Straight vehicles according to traffic lights (red light stop, green line);
右轉車輛同樣不依賴紅綠燈。
Right turn vehicles do not depend on traffic lights.
交通信號燈圖解
Traffic signal lights
B類：
Class B:
掉頭車輛不依賴紅綠燈情況，左轉時確保安全;
U-turn vehicles do not rely on traffic lights, turn left to ensure safety;
左轉車輛依據紅綠燈通行(紅燈停、綠燈行);
Turn left at the traffic lights (red light stop, green line);
右轉車輛也不依賴紅綠燈。
Right turn vehicles do not rely on traffic lights.
交通信號燈圖解
Traffic signal lights
C類：
Class C:
掉頭車輛不依賴紅綠燈情況，左轉時確保安全;
U-turn vehicles do not rely on traffic lights, turn left to ensure safety;
左轉車輛依據紅綠燈通行(紅燈停、綠燈行);
Turn left at the traffic lights (red light stop, green line);
右轉車輛也不依賴紅綠燈。
Right turn vehicles do not rely on traffic lights.