Which is more effective in the rain, hazard warning lights or fog lights?

Driving in heavy rain, how to use the lights is actually a learning experience, today we will talk about driving in heavy rain, hazard warning lights and fog lights which is more effective.

I. Manipulation methods and prevalence:

First, let's take a look at the features and prevalence of hazard warning lights and fog lights. The hazard warning lights in various car models are designed consistently, using a red button-style switch, which is present in every car model. Fog lights, on the other hand, offer more variety, with lever-style, button-style, and knob-style switches being common, catering to the preferences of different users. Although regulations do not mandate the installation of fog lights, the majority of car models are equipped with them, with only a few exceptions in the case of entry-level micro-trucks.

2. Role of hazard warning lights and fog lights:

The hazard warning lights are primarily used in situations where a vehicle experiences a breakdown, is engaged in an emergency task, or operating in extreme weather conditions. The main purpose is to inform other vehicles that our vehicle is in an emergency state and to exercise caution and give way.

Fog lights: Fog lights are divided into front fog lights and rear fog lights, with differences in color. Most commonly, front fog lights are yellow, while rear fog lights are red. The distinctive feature of fog lights is their strong penetrating ability, and they do not produce diffuse reflection due to fog, which serves to alert other vehicles to our presence and enhances our visibility while driving in rainy or foggy weather.

Regarding the use of lights in extreme weather conditions such as rain and fog, the "Regulations on the Implementation of the Road Traffic Safety Law" in China specify the following:

When visibility is less than 200 meters, drivers should turn on fog lights, low beam headlights, position lamps, and front/rear position lights. The speed should not exceed 60 km/h, and a distance of at least 100 meters should be maintained from the vehicle ahead.

When visibility is less than 100 meters, drivers should turn on fog lights, low beam headlights, position lamps, front/rear position lights, and hazard warning lights. The speed should not exceed 40 km/h, and a distance of at least 50 meters should be maintained from the vehicle ahead.

When visibility is below 50 meters, drivers should turn on fog lights, low beam headlights, position lamps, front/rear position lights, and hazard warning lights. The speed should not exceed 20 km/h, and drivers should exit the highway at the nearest exit as soon as possible.

Correct Usage of Hazard Warning lights and Fog Lights

After understanding the roles and regulatory requirements of hazard warning lights and fog lights, we should now have a clear understanding. The hazard warning lights have a broader range of applications as they can communicate our emergency status to others. On the other hand, fog lights are specifically designed for driving in rainy, foggy conditions with reduced visibility. They are not only convenient for others but also beneficial for our own driving in such weather. Therefore, fog lights are the preferred choice for driving in rainy or foggy conditions.