What are the functions of front and rear fog lights?

2 Answers
ChristianLynn
07/25/25 4:03pm
Here are the functions of front and rear fog lights:1. Front fog lights are used to improve road illumination in fog, snow, rain, or dusty conditions.2. Rear fog lights are used in heavy fog conditions to make the vehicle more visible when viewed from behind. Here is some related information about front and rear fog lights:1. The purpose of front fog lights is not illumination, but to provide a high-intensity scattered light source that serves to alert oncoming drivers. If used under normal conditions, they can be bright enough to dazzle the eyes of oncoming drivers.2. Rear fog lights are red signal lights installed at the rear of the vehicle, with higher luminous intensity than tail lights, to make the vehicle more easily detectable by other road users in low visibility conditions such as fog, snow, rain, or dust.
Was this review help?
12
4
Share
McJohnny
08/11/25 9:40pm
I used to drive long distances frequently, and the front fog lights were particularly useful when driving in fog or heavy rain. They are installed at a low position on the front of the car, with the light shining directly onto the ground. This helps penetrate the fog or rain curtain, reduces glare from oncoming vehicles, and allows you to see the road clearly. The rear fog light acts like a striking red marker, alerting vehicles behind to maintain a safe distance in poor visibility and preventing rear-end collisions. That time when I encountered thick fog in the mountains, the headlights weren’t effective, but as soon as I turned on the front fog lights, the road became visible. The rear fog light ensured safety. However, be careful not to misuse them—using them in good weather can impair others’ vision and drain the battery. Remember, fog lights are primarily for severe weather conditions. Keep them turned off under normal circumstances to save energy, and during maintenance, check whether the bulbs and wiring are aging. This way, they’ll be reliable when you need them most.
Was this review help?
16
5
Share
Expand All
More Forum Discussions

Where is the battery located in the Mercedes-Benz C200?

The battery of the Mercedes-Benz C200 is located under the front windshield cover panel on the right side of the engine compartment. Detailed information is as follows: 1. The original battery used in the Mercedes-Benz C-Class is a VARTA-manufactured 12V 80AH CCA 800A AGM battery. 2. If there are ignition abnormalities or battery fault warnings in the Mercedes-Benz C-Class, it is advisable to promptly visit a 4S store or a specialized auto repair shop for inspection, and avoid blindly replacing the battery on your own. 3. When replacing the battery, it is recommended to use the original VARTA 12V 80AH CCA 800A AGM battery, and try to avoid excessive electrical usage after the vehicle is turned off. 4. When the battery voltage falls below 12V, normal ignition may not be possible. The advantages of AGM batteries include long battery life, stable performance, and strong support for various in-car electrical appliances.
15
2
Share

How to Brake a Car?

1. Braking methods on bumpy and complex road sections: The road surface on bumpy sections is complex, so your foot must be on the brake pedal and perform "tap braking," but avoid excessive force. If the speed is too fast, the car's chassis may be damaged. 2. Braking methods when stopping: Before the vehicle comes to a complete stop, you can slightly release the brake and then gently press it again, allowing the vehicle to stop naturally. Avoid keeping the brake pressed continuously, as passengers will feel the impact when stopping. 3. Braking methods on long downhill slopes: When going downhill, the speed will increase. Many drivers choose to continuously press the brake or shift to neutral to coast, which severely wears the brake pads and affects braking efficiency. Therefore, when descending a long slope, use a low gear and rely on engine braking. 4. Emergency braking methods: Most modern cars are equipped with ABS systems, which assist both the vehicle and braking system. Therefore, in case of emergency braking, do not hesitate to press the brake pedal fully to avoid accidents. While performing emergency braking, steer the wheel to avoid obstacles and ensure safety.
10
4
Share

Do Out-of-Town License Plates Need to Apply for a Beijing Entry Permit?

Out-of-town license plates need to apply for a Beijing entry permit. The regulations for out-of-town vehicles entering Beijing are as follows: 1. Vehicles entering roads within the Sixth Ring Road and the entire area of Tongzhou District (excluding the main roads of expressways) must apply for a Beijing entry permit; 2. Each vehicle can apply for a Beijing entry permit a maximum of 12 times per year, with each permit valid for up to 7 days. Before the permit expires, the vehicle must leave Beijing; 3. If a vehicle does not apply for a Beijing entry permit or the permit has expired, and is parked on urban roads above the branch level within Beijing, the number of days the vehicle can apply for a Beijing entry permit in the current year will be reduced accordingly based on the number of days parked; 4. Inter-provincial long-distance passenger buses and inter-provincial tourist buses that have already obtained an out-of-town passenger transport permit do not need to apply for a Beijing entry permit; 5. Military, armed police vehicles, and special vehicles such as police cars and ambulances on duty do not need to apply for a Beijing entry permit.
15
3
Share

What does Audi PA version mean?

Here, PA refers to nylon, which is primarily used in automotive engines and surrounding components. The main varieties include GFPA6, GFPA66, and flame-retardant reinforced PA6 products. Audi models are introduced as follows: 1. A-series: Most Audi models start with the first letter "A" of the company's English name (Audi), such as the Audi A2, A3, A4, A6, and A8 series. The higher the number, the higher the model's grade: A2 and A3 series are compact cars; A4 series are mid-size sedans; A6 series are premium sedans; A8 series are luxury sedans (currently, the A8 is Audi's top-tier sedan). 2. Other series: In addition to the A-series sedans, Audi also has the S series and TT series: The S series mostly consists of high-performance models, though not SUVs, including the S3, S6, and S8; the TT series is entirely composed of sports cars.
12
4
Share

What is the difference between the left turn waiting gesture and the slow down gesture?

1. Different gestures: Left turn waiting: Extend the left arm downward to the left. Pull over: 1) Extend the right arm forward, usually for fines. 2) Extend the left arm upward and the right arm to the left in front of the body, indicating the vehicle to pull over to the right. 2. Different passing conditions when the light is on: The correct method to enter the left turn waiting area is: When the straight signal light is green and the left turn signal light is red, vehicles should wait at the stop line of the intersection for the signal to proceed; when the straight signal light turns green, left-turning vehicles should then enter the left turn waiting area to wait for the signal to proceed; when the left turn signal light turns green, vehicles waiting in the waiting area should quickly pass through the intersection. 3. Different body movements: For a left turn, extend the right arm forward with the right palm upright, and the left arm moves from the outside of the left leg to about 45° in front of the body. For the left turn waiting gesture, only the left arm moves, lifting the left arm to the left side of the body and then bringing it back toward the body.
20
1
Share

Which is better, traditional or beam-style wiper blades?

Both traditional and beam-style wiper blades have their own advantages and disadvantages, but beam-style wipers are more commonly used in modern vehicles. Here are the specific differences between the two types: Working principle: Beam-style wipers directly apply force to the steel band, distributing concentrated pressure and maintaining even force distribution across the rubber blade. Traditional wipers use multiple pressure points along the frame to press the blade against the windshield, theoretically creating even pressure at each contact point. Force distribution: Beam-style wipers distribute force across the entire rubber blade, featuring a simpler and lighter structure that provides better conformity to the windshield's curvature. The steel band in beam-style wipers also has higher elasticity than traditional wipers, reducing vibration and wear while offering longer service life. Traditional wipers, due to their layered pressure transfer mechanism, often suffer from uneven pressure distribution, inconsistent contact with the windshield, and varying wear patterns, which can lead to noise generation. Operating requirements: Beam-style wipers demand higher specifications, requiring wiper arms with greater pressure and more powerful wiper motors. However, when replacing wiper blades, beam-style wipers don't require arm replacement, making the process simpler and more convenient compared to traditional wipers.
17
0
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.