How to Connect a Phone to CarLife?

How to Prevent High-Speed Rear-End Collisions?

Methods to prevent high-speed rear-end collisions include: 1. Stagger your line of sight; 2. Maintain a safe following distance; 3. Alert the vehicle behind you; 4. Avoid unnecessary lane changes; 5. Stay observant; 6. Park properly. Precautions for high-speed driving are: 1. Quickly accelerate to an appropriate speed when entering the main lane from an on-ramp; 2. Do not obstruct vehicles already traveling in the main lane when merging; 3. Continuously pay attention to roadside and roadway signs and markings, and keep slightly to the right; 4. Maintain proper longitudinal distance between vehicles; 5. When overtaking, use the left turn signal and sound the horn, passing from the overtaking lane; 6. In case of an emergency requiring a stop, quickly signal right, slowly pull over to the emergency stopping area, activate hazard lights after stopping, and set up warning markers behind the vehicle.

13

2

Share

How many hours must be completed for Subject 2 each time?

Subject 2 requires at least 4 hours per session. Below is an introduction to the relevant content: 1. Assessment Items: The five assessment items are reversing into a garage, parallel parking, stopping and starting on a slope, right-angle turns, and curve driving. 2. Requirements: Subject 2 requires a total of 26 hours, including 2 hours of theoretical knowledge, so the practical training is actually 24 hours. Below is an introduction to the Subject 3 test content: 1. Starting: Vehicle preparation, starting, and driving straight. 2. Speed control: Gear shifting operations, changing lanes, and pulling over. 3. Turning: Driving straight through intersections, left turns at intersections, and right turns at intersections. 4. Passing designated areas: Passing pedestrian crossings, school zones, and bus stops. 5. Vehicle control: Meeting oncoming traffic, overtaking, making U-turns, and nighttime driving.

6

1

Share

What Causes Inner Tire Wear?

The following are specific reasons that cause inner tire wear: 1. Incorrect wheel alignment: This leads to uneven tire wear when the two wheels on the same side are misaligned or when front and rear wheels are not properly aligned. The vehicle's self-correction causes abnormal increase in friction and accelerated wear on a specific part of the tire. 2. Inaccurate toe adjustment: The front wheels are slightly tilted inward at an angle similar to pigeon toes, which is the optimal angle for high-speed stability. Poor adjustment of the toe angle can also cause tire wear. 3. Steering gear failure: Steering gear malfunction may also lead to tire wear and deviation. 4. Uneven or deformed frame: An uneven or deformed frame can also result in tire wear. 5. Mixed tire installation: Mixing tires of different specifications or having significant differences in tire pressure can cause uneven tire wear.

5

4

Share

Is 5W-40 Oil Fully Synthetic?

5W-40 is a fully synthetic oil. Classification of automotive oils: There are 4 types for summer use, 6 types for winter use, and 16 types for all-season use. The summer oil grades are 20, 30, 40, and 50, with higher numbers indicating greater viscosity and suitability for higher temperatures. Winter oil grades are 0W, 5W, 10W, 15W, 20W, and 25W, where 'W' stands for Winter. The smaller the number before 'W', the lower the low-temperature viscosity, better low-temperature fluidity, and suitability for lower temperatures. All-season oils have grades like 5W-20, 5W-30, 5W-40, 5W-50, 10W-20, 10W-30, 10W-40, 10W-50, 15W-20, 15W-30, 15W-40, 15W-50, 20W-20, 20W-30, 20W-40, and 20W-50. The smaller the winter number, and the larger the summer number, the higher the viscosity and the broader the temperature range. Oil grades: Generally, oils can be divided into the following grades. The most basic is mineral oil, followed by semi-synthetic oil, and the highest quality is fully synthetic oil. This classification is based on API standards. Mineral oil is made from refined petroleum as a base, with some additives. Its chemical molecules vary in size and consistency, leading to average performance, easy oxidation, and shorter lifespan. Semi-synthetic oil undergoes hydrocracking, offering better performance than mineral oil. Fully synthetic oil is artificially made, with uniform chemical molecule alignment and consistency, making it the highest quality.

13

2

Share

What is the Best Age for a Used Car to Buy?

It is generally better to buy a used car that is more than 3 years old. Here is a detailed introduction to the age of used cars: 1. Used cars within 1 year: The condition is generally problem-free, and they still enjoy the warranty service of a new car, offering high usage value but at a relatively higher price. 2. Used cars between 2-3 years: The vehicle has passed the break-in period, offering a higher cost-performance ratio and relatively good condition. 3. Used cars between 4-6 years: They are more affordable, and if well-maintained, their performance can still be above average. 4. Used cars between 7-10 years: They are cheaper, but maintenance costs may be slightly higher. 5. Used cars over 10 years: The safety and reliability of the vehicle may be somewhat compromised.

10

3

Share

What is the use of HUD?

Here are the functions of HUD: 1. Projection: It can project onto the front windshield. 2. Display: It can display some information on the front windshield. 3. Concentration: It can prevent the driver from being distracted by checking these information. Below is the extended information about the related content: 1. Definition: HUD is the head-up display system, which is equipped in many cars. Some family sedans priced at around 100,000 yuan will also use the head-up display system. 2. Safety: The head-up display system can display relatively little information. If too much information is displayed, it will affect the driver's vision, which will affect driving safety. 3. Usage: Many car manufacturers do not use the head-up display system because the cost of the head-up display system is not very high. Some high-end cars will use a full LCD instrument panel. 4. Display screen: Some cars even use an independent graphics card to drive the display screen of the full LCD instrument panel. The display effect of the full LCD instrument panel is better, and it can display more information.

1

Share

How to Connect a Phone to CarLife?

How to Prevent High-Speed Rear-End Collisions?

How many hours must be completed for Subject 2 each time?

What Causes Inner Tire Wear?

Is 5W-40 Oil Fully Synthetic?

What is the Best Age for a Used Car to Buy?

What is the use of HUD?

What Does Subject 2 Failure Compensation Mean?

What is the normal range for a tire pressure monitor?

Is the Smart Car Allowed on Highways?

Is It Normal for the Exhaust Pipe Outlet to Rust?