How to Cancel the Speed Alarm?

How Long Does the Safety Education for Subject 4 Take?

After passing Subject 4, the safety education at the traffic police station requires no less than half an hour. According to Article 46 of the 'Regulations on the Application and Use of Motor Vehicle Driving Licenses,' applicants who pass the exam must receive no less than half an hour of safety education on civilized driving and case studies of traffic accidents, and participate in the oath-taking ceremony for receiving the license. Subject 4, also known as the theoretical exam for Subject 4 or the driver's theoretical exam, is part of the assessment for obtaining a motor vehicle driving license. Below is an introduction to the Subject 4 exam: 1. Scope: Depending on the type of driving license being applied for, 50 questions are proportionally selected from the corresponding Subject 4 question bank. For car licenses, questions are selected from 1235 questions, and for large vehicle licenses, questions are selected from 1235 questions, with each question worth 2 points. 2. Time: The exam duration is 45 minutes. If 12 points (6 questions) are answered incorrectly during the exam, the session will be terminated. 3. Question Types: The exam includes true/false questions (questions 1-22), single-choice questions (questions 23-45), and multiple-choice questions (questions 46-50). 4. Questions: The exam questions include picture-based questions, scenario recognition questions, and text-based questions.

11

5

Share

Does the Dash Cam Continue Recording After the Car is Turned Off?

The dash cam can continue recording after the car is turned off. The parking monitoring function primarily relies on the dash cam automatically starting to record when it detects vibrations. This functionality is achieved through a built-in high-sensitivity gravity sensor. Operating time of the dash cam: If the dash cam is wired to a constant power source during installation, providing 24-hour power supply, and if the parking monitoring, time-lapse recording, or motion detection features are enabled on the dash cam, then after the car is turned off, the dash cam will start recording upon detecting vibrations and automatically save the video without overwriting it. If there is movement within the range of the dash cam's camera, the motion detection feature will activate and automatically start recording. With time-lapse recording enabled, the dash cam can continue recording around the clock even after the vehicle is turned off. Important notes: Even though the dash cam can record after the car is turned off, it's important to be aware that dash cams have blind spots. Single-lens dash cams can only capture the front view, dual-lens dash cams can capture the front and rear, and 360-degree panoramic dash cams can capture all angles. For safety considerations, it is recommended to park the vehicle in an area with surveillance cameras.

2

0

Share

What are the reasons for engine coolant deficiency?

Here are the reasons for engine coolant deficiency: 1. When the water temperature rises, the steam inside the water channel forces the coolant out of the reservoir. 2. Poor performance of the water pump or thermostat can cause the circulating system's water temperature to become too high, leading to excessive pressure inside the radiator and cooling system, which results in coolant flowing out from the reservoir. 3. Poor sealing of the cylinder gasket. Below are some related points: 1. Lack of coolant in a car means the car's engine and radiator lack protection. 2. Insufficient coolant in a car can affect the radiator's heat dissipation efficiency, failing to achieve the necessary cooling effect. This disrupts the normal circulation of coolant, leading to high temperatures and, in severe cases, can cause engine damage.

20

0

Share

How to Spray Windshield Washer Fluid?

Windshield washer fluid spray switch is located on the right-hand stalk of the steering wheel, which also operates the wipers. Pull the stalk towards yourself to spray the fluid. Windshield washer fluids are mainly divided into three types: summer-use fluid, winter-use antifreeze fluid, and special antifreeze fluid. Summer-use fluid is primarily used to remove insect residues from the windshield. It is important to choose the appropriate windshield washer fluid based on different climates and temperature conditions. Below are the key features of windshield washer fluids: 1. Cleaning Performance: Windshield washer fluid is formulated with various surfactants and additives. Surfactants typically have functions such as wetting, penetrating, and solubilizing, thereby achieving cleaning and stain removal. 2. Antifreeze Performance: The presence of alcohol and ethylene glycol significantly lowers the freezing point of the liquid, providing antifreeze effects and quickly dissolving frost. 3. Anti-fog Performance: A single-molecule protective layer forms on the windshield surface. This protective film prevents the formation of fog droplets, ensuring the windshield remains clear and transparent with a clear field of vision.

3

0

Share

Can a Car with Modified Scissor Doors Pass the Annual Inspection?

Modifying a car with scissor doors requires applying for a change registration at the vehicle management office and obtaining approval before the modification can proceed. If the modification is not approved by the traffic management department in advance, the modified car will not pass the annual inspection normally. According to the relevant provisions of the current "Motor Vehicle Registration Regulations," any changes to the body color, model, performance, purpose, or structure of a licensed motor vehicle, or the replacement of the frame, body, or engine, must be reported to the vehicle management office for a change registration. The national regulations on car modifications stipulate that the following situations will not be eligible for change registration: 1. Vehicles that alter the brand, model, or engine type of the motor vehicle, except for engines that are optionally installed with the permission of the competent department of motor vehicle products under the State Council; 2. Vehicles that change the registered appearance or technical data of the motor vehicle, unless otherwise stipulated by laws, regulations, or national mandatory standards.

2

0

Share

What Causes Engine Oil Consumption in Cars?

It may be due to oil burning faults or engine oil leakage faults. Here is extended information: 1. Stuck piston rings prevent oil from returning to the oil pan, causing oil shortage and oil burning phenomenon. 2. The seal valve of the turbocharger prevents oil from returning, resulting in oil burning where the oil doesn't actually participate in combustion. This can cause the car to lose one liter of oil per 1000 kilometers. 3. Improper timing belt replacement operation blocking the crankcase ventilation port, preventing oil from returning. This issue often occurs in vehicles with special design structures, such as Citroen and Peugeot's 1.2T engine. This engine design immerses the timing belt in the oil pan, requiring belt replacement every 40,000-50,000 kilometers. Due to the special design, inexperienced repair shops may improperly block the crankcase ventilation port during belt replacement, causing oil to not return and resulting in the so-called oil burning phenomenon.

8

3

Share

How to Cancel the Speed Alarm?

How Long Does the Safety Education for Subject 4 Take?

Does the Dash Cam Continue Recording After the Car is Turned Off?

What are the reasons for engine coolant deficiency?

How to Spray Windshield Washer Fluid?

Can a Car with Modified Scissor Doors Pass the Annual Inspection?

What Causes Engine Oil Consumption in Cars?

Can You Chew Gum During the Second Driving Test?

What is the handle for opening the car door called?

Can I get my driver's license directly after passing the theoretical test of Subject 3?

What to Do When the Car Battery Dies After Sitting for a Month?