Has the Highway Speed Limit of 80 Been Cancelled?

What to Do If You Fail the Theory Test Five Times?

If you fail the Theory Test (Subject 1) five times, you need to re-register and take the test again. Below is an introduction to Subject 1: 1. The total duration of the Subject 1 test is 45 minutes, and the test paper consists of 100 questions, including true/false and multiple-choice questions. Each question is worth 1 point, and a score of 90 is required to pass. The test questions are randomly selected and combined by the computer driver examination system according to the proportion specified in the "Motor Vehicle Driver's License Work Regulations." 2. Subject 1 refers to the theoretical driving test conducted at the Vehicle Management Office, which is a mandatory licensing exam for all driver's license applicants. The test content includes the most basic knowledge such as driving theory fundamentals, road safety laws and regulations, traffic signals, traffic rules, as well as local regulations. The scheduling of the theoretical driving test is arranged by local Vehicle Management Offices. 3. Subject 1 is part of the teaching and examination outline for motor vehicle driver training. This outline divides the examination into three subjects, organized by the traffic management department of the public security authority. The examination sequence follows Subject 1, Subject 2, and Subject 3. Candidates can proceed to the next subject only after passing the previous one; if they fail a subject, they must retake that subject.

20

3

Share

What do the gear letters P, R, N, D stand for in a car?

Here is an introduction to the meanings represented by the gear letters P, R, N, D in a car: 1. P gear: The word represented by P is Park, which means parking in Chinese. This gear is also called the parking gear, used when parking the car. 2. R gear: The word represented by R is Reverse, which means backward, opposite, and reverse gear in Chinese. This gear is also called the reverse gear. When you need to reverse the car, engaging this gear will make the car move backward. 3. N gear: The word represented by N is Neutral, which means neutral and idle in Chinese. This gear is called the neutral gear and can be used when starting the car, towing, or during temporary stops (such as at a red light). 4. D gear: The word represented by D is Drive, which means forward and driving in Chinese. This gear is called the drive gear. After starting the car, you should engage the D gear. The entire car's transmission will automatically shift gears. As the driver, you only need to steer the wheel and control the accelerator and brake.

4

0

Share

Causes of Cylinder Wear

Causes of cylinder wear are as follows: 1. Poor lubrication. When the engine is running, the lubrication conditions in the upper part of the cylinder are poor, and the cylinder wall temperature is high, making it difficult to form a good oil film. In addition, fine oil particles in the combustible mixture continuously wash the cylinder wall, which also destroys the oil film on the cylinder wall. This results in dry or semi-dry friction between the upper part of the cylinder and the piston rings, causing cylinder wear. 2. Mechanical wear caused by high pressure. When the engine is running, the piston rings press tightly against the cylinder wall under the action of their own elasticity and gas pressure. When the piston reciprocates in the cylinder, mechanical wear occurs due to relative friction. The degree of wear depends on the magnitude of the normal force exerted by the piston rings on the inner cylinder wall. 3. Abrasive wear. When dust is present in the air entering the cylinder or when the lubricating oil contains impurities, abrasive wear occurs. Generally speaking, the cooling and lubrication conditions of the cylinder play a decisive role in wear, but the vehicle's operating conditions, maintenance, and repair quality also affect wear.

9

4

Share

What is the fuel consumption of a 1.5T engine?

1.5T represents a displacement of 1.8 to 2.0 liters. Generally, the fuel consumption of a sedan with a 1.5L engine should be around 7-9 liters per 100 kilometers. For conventional cars with engines under 2.0L, the fuel consumption per 100 kilometers is not directly related to the displacement. It depends on factors such as the overall vehicle matching, engine performance, vehicle weight (curb weight), and drag coefficient. More relevant information is as follows: 1. Constant-speed fuel consumption: Constant-speed fuel consumption refers to the fuel economy indicator when a car is driving at a constant speed on a good road. Since constant-speed driving is a basic operating condition for cars on highways, and this type of fuel consumption is easy to measure, it is widely adopted. For example, France and Germany use the constant-speed fuel consumption at 90Km/h and 120Km/h as the main evaluation indicators for fuel economy. China also adopts this indicator. The fuel consumption per 100 kilometers indicated in the manuals of domestic cars is usually the constant-speed fuel consumption. 2. Fuel consumption differences: Since cars often experience various working conditions such as acceleration, deceleration, braking, and engine idling during actual driving, the constant-speed fuel consumption is often lower and differs significantly from the actual fuel consumption. This difference is even greater for cars frequently used for short-distance driving in urban areas.

3

4

Share

What are the causes of braking failure in the Passat Lingyu?

Passat Lingyu braking failure is caused by excessive free travel of the brake pedal or excessive brake clearance. Passat Lingyu driving issues: In addition to the new and upgraded high-performance turbocharged engine, the powerful and swift engine is back in action. This engine can accelerate instantly at low to medium speeds, reaching its maximum torque of 260 Nm at just 3200 rpm, with fuel consumption per 100 kilometers reduced from the original. Drivers of automatic transmission Lingyu models should be extra cautious when driving through deep water, as there is a vent hole on the upper part of the automatic transmission. If water enters, the entire transmission must be disassembled and parts replaced. Passat Lingyu solution: Regarding the issue of engine noise in the Lingyu, this is the most frequently reported problem by customers. It's not just the Lingyu; other Volkswagen models have also experienced engine noise issues. For this problem, some noises may be due to customers being overly sensitive and mishearing, but some noises do indicate actual faults. For example, certain batches of Lingyu models experienced engine noise due to the tensioner pulley.

16

2

Share

How Does Isuzu Solve DPF Regeneration?

Isuzu's methods for solving DPF regeneration are as follows: 1. Automatic Regeneration: When the DPF indicator is green, no manual intervention is required. This typically occurs when the vehicle is driven at high speeds (above 80km/h). Continue driving normally until the particulate matter is processed, and the DPF indicator will automatically turn off. 2. Manual Regeneration: When the DPF yellow indicator light flashes, this usually happens when the vehicle is driven at speeds below 80km/h. In this case, promptly move the vehicle away from roads, flammable, and explosive materials. Once the vehicle is stationary, shift to neutral, engage the handbrake, and press the DPF control button. The yellow indicator will then stay lit continuously, and the process will take approximately 15-30 minutes. Once the particulate matter is processed, the indicator will automatically turn off. 3. On-Demand Regeneration: This can be performed at any time and is suitable for users who primarily drive in urban areas. For example, after returning home from work, park the vehicle, press and hold the DPF processing button for 3-5 seconds to initiate detection. If the yellow indicator flashes, it indicates the need for manual regeneration. In this case, press the DPF button again, and the yellow indicator will stay lit continuously. Wait for 15-30 minutes, and when the indicator turns off, it signifies that the particulate matter processing is complete.

18

5

Share

Has the Highway Speed Limit of 80 Been Cancelled?

What to Do If You Fail the Theory Test Five Times?

What do the gear letters P, R, N, D stand for in a car?

Causes of Cylinder Wear

What is the fuel consumption of a 1.5T engine?

What are the causes of braking failure in the Passat Lingyu?

How Does Isuzu Solve DPF Regeneration?

What to Do When a Car Burns Engine Oil?

Is the Panamera a Full-Time Four-Wheel Drive Vehicle?

What is the wiper size for the Audi A5?

What is the weight of the Mercedes-Benz S680?