Are Four-Wheel Drive Vehicles Safer Than Two-Wheel Drive Vehicles?

Why Does a Car Make Abnormal Noises When Turning?

Here are the reasons why a car makes abnormal noises when turning: 1. A clicking sound when turning is usually caused by wear and tear in the outer CV joint of the drive shaft. 2. The sound of tires rubbing against the ground may indicate the need for wheel alignment. 3. A metallic scraping noise could be due to the brake shield rubbing against the brake pad. Additional Information: Here are methods to check a vehicle's safety condition: 1. Check if the engine oil, brake fluid, fuel, and coolant levels are normal and if there are any leaks. 2. Inspect the braking system for proper function and effectiveness; ensure tire pressure is normal and the spare tire is in good condition. 3. Verify that the turn signals, brake lights, headlights, windshield wipers, and horn are functioning properly. 4. Examine the steering system to ensure it is intact and reliable. 5. Record all inspection findings, report and repair any issues immediately, and strictly prohibit driving a 'faulty vehicle'.

13

1

Share

What is the Multibeam LED Headlight?

Multibeam LED headlight is a type of LED headlight that utilizes a newly developed high-resolution precision LED module as a grid light source. Here is a detailed introduction to automotive LED headlights: 1. Function of LED Headlights: With the continuous advancement in vehicle production technology, traditional halogen and xenon headlights have been upgraded to LED headlights, which have now become mainstream. The light emitted by LED headlights is nearly identical to daylight, enhancing driving efficiency. 2. Features of Multibeam LED: The Multibeam LED headlight was first introduced in Mercedes-Benz vehicles. The new long-wheelbase E-Class is equipped with Multibeam LED headlights, featuring 84 individually activated LED light sources, providing more precise and brighter illumination. The light from these headlights is evenly distributed on the road without causing glare to other road users, improving dynamic response. In terms of pixel count, the Multibeam LED headlight is similar to an LED display, but it allows individual pixel adjustment. With the addition of LED light sources, this headlight can increase the resolution of the light pattern by up to 3.5 times compared to previous models, offering better illumination for the vehicle.

18

3

Share

What is the maximum speed during a car's break-in period?

During the break-in period, a car generally should not exceed 80 km/h. Here are some relevant introductions about the car break-in period: 1. Introduction to the new car break-in period: The break-in period for a new car is typically around 2,000 kilometers. The purpose of the break-in period is to condition the car's engine performance. During this period, it is advisable to avoid high-speed driving and keep the speed below 80 km/h. Operations should be steady, and the clutch should be fully depressed when shifting gears. After reaching 2,000 kilometers, high-speed driving is permitted. 2. Specific operations during the break-in period: The break-in process is not only applicable to the engine but also to the transmission. This is why frequent gear shifts are recommended within the first 100 kilometers. Manual transmission models are relatively smoother in this regard. To complete a gear shift, fully depress the clutch, shift gears, and then gradually release the clutch. However, it is crucial to avoid depressing the clutch only halfway when shifting gears, as this not only makes gear shifting very difficult but also causes severe damage to the transmission.

10

2

Share

Can You Use Windshield Wipers in Snowy Weather?

You can use windshield wipers in snowy weather, but it's essential to remove any ice chunks from the glass beforehand to avoid damaging the wiper motor. Here are some relevant details: 1. Principle: Rubber materials have a specific temperature range for optimal use. If the wipers are frozen under snow and frost for extended periods (low-temperature conditions), it will undoubtedly reduce their lifespan and affect their wiping performance. 2. Precautions: It's important to note that you shouldn't simply lift the wipers upright, as raising them from their original position may cause them to get stuck against the hood. Forcing them could potentially damage the wipers.

11

4

Share

Is it allowed to make a U-turn when the traffic light is red?

If the U-turn signal light is red, you must wait to make a U-turn; otherwise, it will be considered running a red light. According to the "Road Traffic Safety Law," this offense carries a penalty of 6 demerit points and a fine of 200 yuan. If there is no dedicated U-turn signal light, and the gap is marked with a dashed line, the U-turn is not affected by the traffic signal and does not require crossing the pedestrian crossing. However, if the gap is marked with a solid line, the U-turn must cross the pedestrian crossing and is subject to the left-turn signal. Making a U-turn directly under such conditions may result in being photographed or penalized by on-site traffic police. When making a U-turn that requires crossing the pedestrian crossing, yielding to pedestrians is mandatory: If pedestrians are walking on the right side of the crosswalk and have not reached the centerline of the road, vehicles on the left side must slow down and proceed only after ensuring safety. If pedestrians are waiting outside the boundary of the motorized and non-motorized lanes and have not entered the roadway, vehicles should slow down and proceed only after ensuring safety. If pedestrians have crossed the boundary between motorized and non-motorized lanes, failing to stop and yield is a violation and subject to penalties. If pedestrians enter the motorized lane (Lane A) via the crosswalk, vehicles in Lane B must slow down and proceed only after ensuring safety. Failing to stop and yield in Lane A is a violation and subject to penalties. If pedestrians are waiting at the centerline of the road without entering the motorized lane, failing to stop and yield is a violation and subject to penalties. If pedestrians cross the centerline and enter the motorized lane, failing to stop and yield is a violation and subject to penalties. If the road is divided by a green belt and pedestrians are waiting in the central stopping area, vehicles must slow down and proceed only after ensuring safety. Scenarios where U-turns are allowed: If an intersection has a U-turn sign, U-turns are permitted. If there is a dedicated U-turn signal light, follow its instructions. If no signal light exists, make the U-turn without obstructing other vehicles or pedestrians. If an intersection does not explicitly prohibit U-turns or left turns, U-turns are allowed. "No explicit prohibition" means the absence of "No U-turn" or "No left turn" signs and no solid centerline. U-turns are also permitted in yellow grid zones. Yellow grids indicate no-stopping areas but do not prohibit U-turns unless a central barrier is present. If a U-turn signal light is present, follow its instructions—U-turns are allowed only on green. If "No left turn" and "U-turn allowed" signs coexist, U-turns are permitted but left turns are prohibited. Note that "No U-turn" is not equivalent to "No left turn." Precautions when making U-turns at intersections: Check road markings—U-turns are never allowed on solid lines. Proceed to find a suitable location. If a "No left turn" sign is present, U-turns are also prohibited, as they inherently involve a left turn. U-turns must be made from the innermost left-turn lane. U-turns from the second left-turn lane are prohibited. Always yield to through traffic before making a U-turn. Failing to do so makes you fully liable for any accidents. Near stop lines, lanes often have guiding arrows. The leftmost lane may not always be for left turns—some have straight arrows, which prohibit U-turns even without explicit signs.

1

5

Share

How to Explain Ignition Advance Angle?

From the moment of ignition until the piston reaches the top dead center of compression, the angle through which the crankshaft rotates during this period is called the ignition advance angle. The ignition advance angle that enables the engine to achieve optimal power, fuel economy, and emissions is referred to as the optimal ignition advance angle. Functions of the ignition advance angle: 1. Increase output power: If ignition occurs exactly when the piston reaches the top dead center, the air-fuel mixture begins to burn as the piston has already started moving downward, leading to a decrease in engine power. Therefore, advancing the ignition ensures that the energy generated by the combustible mixture is effectively utilized, enhancing the engine's output power. 2. Improve mechanical efficiency: An appropriate ignition advance angle allows the engine to perform the maximum mechanical work per cycle.

4

Share

Are Four-Wheel Drive Vehicles Safer Than Two-Wheel Drive Vehicles?

Why Does a Car Make Abnormal Noises When Turning?

What is the Multibeam LED Headlight?

What is the maximum speed during a car's break-in period?

Can You Use Windshield Wipers in Snowy Weather?

Is it allowed to make a U-turn when the traffic light is red?

How to Explain Ignition Advance Angle?

What is the equivalent of Euro 4 in domestic emission standards?

Can You Get a Driver's License While Pregnant?

What Are the Reasons for Difficulty Starting a Scooter Motorcycle?

Car Shaking with Abnormal Noises?