What is the most reasonable mileage interval for car maintenance?

Can I retake the test on the same day if I scored 88 in Subject 1?

The "Regulations on the Application and Use of Motor Vehicle Driver's Licenses" clearly stipulates that for the Subject 1 retest, candidates can take the test twice on the same day. If the first attempt is failed, the second retest can be taken for free. If the second attempt is still failed, the Subject 1 test is terminated, and the candidate can only schedule the test again after ten days. Subject 1, also known as the theoretical test or driver's theory test, is part of the motor vehicle driver's license assessment. The test content includes driving theory basics, road safety laws and regulations, local regulations, and related knowledge. The test format is computer-based, with a time limit of 45 minutes. A passing score for Subject 1 is 90 points. The test consists of 100 questions, divided into single-choice and true/false questions, with each question worth 1 point, totaling 100 points. If 11 questions are answered incorrectly during the test, the system will automatically submit the test and end the exam. Subject 1 test content includes: driver's license and motor vehicle management regulations; road traffic conditions and regulations; road traffic safety violations and penalties; road traffic accident handling regulations; basic knowledge of motor vehicles; local regulations; knowledge of braking systems and safety devices for large and medium-sized passenger and freight vehicles; specialized knowledge for wheeled self-propelled machinery, trams, and trolleybuses.

1

3

Share

What is the Difference Between Cast Grade and Calendered Grade Color Change Films?

Although both are made of PVC, the resulting color change films differ due to variations in production processes. Based on the manufacturing techniques, color change films can be categorized into two main types: calendered grade and cast grade. The thinness of cast grade color change films contrasts sharply with the thickness of calendered grade films, highlighting a significant difference. Here are the distinctions between cast grade and calendered grade color change films: 1. Calendered Grade: In simple terms, the calendered grade process involves producing the film by "extruding and stretching" PVC raw materials, somewhat akin to "pulling noodles." The most notable feature of this method is its affordability, making it suitable for those who frequently wish to change their car's color. However, it also has some drawbacks: the film is relatively thick, has slightly inferior surface smoothness and color uniformity, is prone to adhesive failure over prolonged use, and may fade. 2. Cast Grade: The cast grade process involves mixing all raw materials together and then using an ultra-clean transparent "casting paper" to spread the mixture evenly via specialized equipment, thereby producing the color change film. Some liken this process to "making pancakes"—indeed, there's little difference between crafting films and snacks. High-quality cast grade color change films incorporate additives such as chain plasticizers, high-temperature stabilizers, and UV inhibitors. Since the film does not undergo the "stretching" stage, it exhibits excellent UV resistance, anti-aging properties, shrinkage resistance, and superior product elasticity.

9

1

Share

How many points are deducted for using turn signal less than 3 seconds in Subject 3?

Subject 3: Using turn signal for less than 3 seconds will result in a 10-point deduction. A motor vehicle driver's license is a legal document issued by the administrative department after a person who is legally allowed to learn to drive a motor vehicle has studied, mastered the knowledge of traffic regulations and driving skills, and passed the examination. The following are the four subjects for obtaining a driver's license: 1. Subject 1: Traffic regulations and related knowledge - written test, with a full score of 100, and a passing score of 90 or above (including 90); 2. Subject 2: Field driving - on-site, actual vehicle. It is divided into pass and fail. There are 5 compulsory test items (all without poles), including reversing into a garage, parallel parking, stopping and starting on a slope, turning at a right angle, and driving on a curve. All compulsory items must be passed to pass Subject 2; 3. Subject 3: Road driving - on the road or simulated site, actual vehicle. It is divided into pass and fail. The test is fully monitored by electronic eyes + traffic police examination, making the road test more fair. Since January 1, 2013, with the implementation of the new traffic regulations, the test has added items such as the use of lights, left and right turns, and passing through pedestrian crossings; 4. Subject 4: Added a theoretical test on safe and civilized driving knowledge. The difference from Subject 1 is that it adds image analysis and judgment. There are 50 questions in the test, each worth 2 points. The full score is 100, and a score of 90 or above is required to pass.

4

0

Share

Is Driving Over Speed Bumps at 40 mph Harmful to the Car?

Driving over speed bumps at 40 mph can be harmful to the car. Here are some precautions when driving over speed bumps: 1. Reduce speed in advance: When encountering a speed bump, it is best to slow down early and pass over it straight on, balancing the impact force on both tires to evenly distribute the load on the suspension system on both sides. Avoid slamming on the brakes or accelerating, allowing the vehicle to pass over the speed bump naturally. This method is not only safer but also protects the vehicle's suspension and steering systems, minimizing damage to the car. 2. Pass over with one side: When driving straight over a speed bump, the vehicle tends to bounce and jolt more significantly. However, when passing over at an angle or with one side of the wheels, the bouncing is reduced, and there are fewer instances of swaying when using a single wheel.

11

3

Share

Can a Tow Truck Operate in an Underground Garage?

An underground garage can accommodate towing operations using a pickup tow truck. Here are the precautions to take when towing: 1. Prefer a Tow Bar: If the towed vehicle has brake issues or the towing is to be done on icy or snowy roads, a tow bar should be prioritized. A rigid tow bar can prevent the towed vehicle from losing control of its speed if the towing vehicle pulls too hard or needs to brake suddenly. In general, using a tow bar is safer. 2. Choose the Right Hook: The towing hook should not just "hook" onto the vehicle but must be securely fastened and properly installed. Double-check that the hook is properly engaged before towing. If the hook comes loose halfway, it can cause significant trouble. 3. Plan the Route and Maintain Communication: Select a towing route with less traffic, better road conditions, and a shorter distance. Avoid areas with heavy pedestrian or commercial activity, underground parking lots, or other potentially hazardous sections to reduce the risk of secondary accidents. Ideally, use walkie-talkies to maintain constant communication for immediate handling of emergencies. At the very least, use horn signals to coordinate. 4. Control Speed and Distance: Pay special attention to speed control and the distance between the two vehicles during towing, as slight misjudgments can lead to accidents. Do not drive as fast as usual; maintain a speed of around 20 km/h and never exceed 30 km/h. Many vehicles lack vacuum-assisted braking when not running, so speed must be kept low. Also, maintain an optimal distance of 5-11 meters between vehicles to allow the towed vehicle enough time to react if the towing vehicle brakes suddenly.

11

1

Share

Is it serious if tires run over asphalt?

Tires running over asphalt may cause damage. As asphalt is highly adhesive, it becomes increasingly firm over time. Asphalt adhering to tires can reduce friction between the tires and the road surface, potentially leading to brake failure. If asphalt sticks to car tires, it not only poses safety hazards but also becomes increasingly difficult to clean over time. It is recommended to use professional tools and cleaning agents for removal. Below is relevant information about tires: 1. Functions of tires: Mainly include dry road grip, hydroplaning resistance, providing comfort, reducing driving noise, impact resistance, wet road grip, load-bearing capacity, handling performance, average wear, and mileage. 2. Composition of tires: The tread primarily contacts the ground, the shoulder and sidewalls provide support, and the bead contacts the rim to ensure sealing. The interior of the tire is composed of multiple layers of different materials, including tread patterns, overlay, steel belt layers, stress-absorbing rubber strips, carcass ply layers, and inner liner.

13

5

Share

What is the most reasonable mileage interval for car maintenance?

Can I retake the test on the same day if I scored 88 in Subject 1?

What is the Difference Between Cast Grade and Calendered Grade Color Change Films?

How many points are deducted for using turn signal less than 3 seconds in Subject 3?

Is Driving Over Speed Bumps at 40 mph Harmful to the Car?

Can a Tow Truck Operate in an Underground Garage?

Is it serious if tires run over asphalt?

What does low traction start mean?

How to Use a USB Drive to Listen to Music in the 2021 Honda CR-V?

Will Auto Lights Turn on High Beams?

What is the difference between beadlock wheels and regular wheels?