How often should a B2 driver's license be renewed?

What are the clever methods to remove small yellow spots from white cars?

Clever methods to remove small yellow spots from white cars: 1. Use car wash clay dipped in water to vigorously rub the areas with yellow spots on the car body, then rinse with clean water; 2. Spray iron remover on the areas with yellow spots on the car body, let it soak for 4 to 6 minutes, then rinse thoroughly with clean water, and use cleaning solution if necessary; 3. Take the car to a 4S shop for polishing, waxing, or crystal coating treatment. Reasons for the appearance of small yellow spots: 1. The car is parked outdoors, and rainwater mixed with iron powder falls on the car body surface. If not washed in time, rust spots form on the paint surface; 2. The car is not frequently driven, and the paint is exposed to air for a long time. Various factors such as air humidity, salinity, pH of rainwater, and UV radiation intensity affect the oxidation of the car paint.

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Should You Replace 4 Tires at Once or Just 2?

Whether to replace 4 tires at once or just 2 depends on economic cost and actual usage conditions. The decision should be based on tread wear indicators - those small raised blocks in the tire tread pattern. When the tread wears down to the level of these indicators, it means the tire has reached the end of its service life. At this point, the tire's friction performance, water drainage, pressure resistance, and collision resistance are significantly reduced, making it difficult to ensure safe and stable operation in emergencies, so replacement should be done as soon as possible. For normally used tires (without issues like uneven wear, cupping, damage, or bulges), replacement should be based on actual wear conditions. However, there's one principle: when replacing tires, it's best to replace both tires on the same axle simultaneously. On one hand, tires on the same axle usually wear at similar rates, so their replacement cycles won't differ much. On the other hand, replacing only one tire may affect vehicle stability and braking performance due to different friction coefficients between the two sides.

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What Causes Excessive Exhaust Gas in Diesel Engines?

Here are the reasons and solutions for excessive exhaust gas in diesel engines: Clogged air intake: The diesel engine's fuel tank is not sealed, leading to prolonged contact with air. This causes airborne impurities and dust to accumulate in the air filter, blocking the air intake. As a result, insufficient air is supplied for internal combustion, leading to incomplete combustion. It is recommended to clean the air filter frequently in harsh environments and periodically in cleaner environments, along with regular replacement of the air filter. Poor fuel quality: Poor fuel quality may also clog the fuel lines inside the tank, leading to insufficient fuel supply. The best solution is to replace the solenoid valve. Poor fuel quality can also damage the fuel filter, causing the fuel inside to degrade and produce black smoke. In severe cases, it may even damage the fuel system. If the fuel filter does not meet standards, it must be replaced promptly.

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How many points are deducted for not wearing a seat belt in 2020?

The penalties for not wearing a seat belt in 2020 are as follows: 1. When driving on urban expressways without using a seat belt as required, a fine will be imposed and 2 points will be deducted; 2. When driving on highways without using a seat belt as required, a fine will be imposed and 2 points will be deducted; 3. When driving on roads other than highways or urban expressways without using a seat belt as required, a fine will be imposed, but no points will be deducted. Notes on correctly wearing a seat belt: 1. The lap belt should be fastened snugly across the hips, just touching the femur, so that in a collision, the force is applied to the pelvic bones, avoiding serious injury caused by the belt tightening the abdomen; 2. The shoulder belt should be positioned over the shoulder and across the chest, as these parts of the body can better withstand the restraining force of the belt; 3. To ensure the lap belt is tight, pull the lap belt downward at the buckle end while pulling the shoulder belt upward.

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Is Speed Detection Enforced in 30 km/h Zones?

Generally, speed detection is not enforced in areas with a 30 km/h speed limit, but there may be exceptions. Whether speed detection is in effect depends on the presence of speed monitoring signs in the area. Normally, speed monitoring zones will have warning signs indicating radar speed detection or surveillance equipment. Driving a motor vehicle in violation of speed limits, under any of the following four circumstances without causing consequences, will result in a warning from the traffic management department: 1. Exceeding the speed limit by less than 50% on roads with a speed limit below 60 km/h; 2. Driving medium-sized or larger passenger or cargo vehicles, school buses, or hazardous material transport vehicles at speeds exceeding the limit by less than 10% on roads other than highways or urban expressways; 3. Driving vehicles other than medium-sized or larger passenger or cargo vehicles, school buses, or hazardous material transport vehicles at speeds exceeding the limit by less than 10%; 4. Driving a motor vehicle on a highway at speeds below the limit by less than 20%.

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How Do Beginners Understand Traffic Signals?

Methods for beginners to understand traffic signals: 1. When the green light is on, vehicles are allowed to proceed, but turning vehicles must not obstruct the passage of straight-moving vehicles and pedestrians; 2. When the yellow light is on, vehicles that have already crossed the stop line may continue to proceed, while vehicles are prohibited from moving when the red light is on; 3. At intersections without non-motor vehicle signals or pedestrian crossing signals, non-motor vehicles and pedestrians should follow the indications of the motor vehicle traffic signals; 4. When the red light is on, right-turning vehicles may proceed if they do not hinder the passage of other vehicles and pedestrians. Traffic signals are lights that direct traffic flow, typically consisting of red, green, and yellow lights. A red light indicates prohibition, a green light indicates permission, and a yellow light serves as a warning. Traffic signals are categorized into: motor vehicle signals, non-motor vehicle signals, pedestrian crossing signals, directional indicator lights (arrow signals), lane signals, flashing warning signals, and railway crossing signals.

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How often should a B2 driver's license be renewed?

What are the clever methods to remove small yellow spots from white cars?

Should You Replace 4 Tires at Once or Just 2?

What Causes Excessive Exhaust Gas in Diesel Engines?

How many points are deducted for not wearing a seat belt in 2020?

Is Speed Detection Enforced in 30 km/h Zones?

How Do Beginners Understand Traffic Signals?

Is it okay to sleep in the car without opening the windows?

Does Illegal Parking Result in Points Deduction?

How to Urge the Traffic Police to Issue the Liability Statement?

How Many Points Are Deducted for Driving Against Traffic?