您的大灯有两个设置 - 高和低。当您在夜间在荒芜的道路上开车时，使用远光灯，并且比低光束提供了更好的能见度。However, they’re too bright to use when there is oncoming traffic, as you can blind the other driver. In this case, you’d switch to your low beams. You also use your low beams when driving in town at night where there’s lots of traffic as well a street lights, and when driving in foggy conditions (high beams create too much reflection in fog, which actually reduces visibility).

有多少个灯泡的问题

In the past, high beams and low beams were separate bulbs on all cars. Today, that’s not the case. Most modern vehicles have a single bulb with two filaments. One is for the low beams and one is for the high beams. However, that’s not true across the board.

某些汽车（大多是高端车辆或性能车辆）确实有单独的灯泡，可用于其高光束和低光束。通常，您将拥有一个标准的卤素灯泡，用于低光束，然后为远光灯掩盖灯泡。这些不可互换。两者都需要不同的灯泡（HID灯泡也比卤素灯泡昂贵得多）。

Depending on the vehicle in question, you may also have LED bulbs – some automakers use these for parking lights/turn signals, while others are beginning to use them for the actual headlight (these are still rare, although there are aftermarket LED kits available).

因此，远光灯是否使用单独灯泡的问题的答案是：这取决于。检查您的汽车前部。如果有四个大灯元素（每侧两个），那么您的高光束和低光束很可能很可能。如果您只有两个大灯元件（每侧一个），则您的车辆使用双丝灯泡同时操作高光束和低光束。