What is a Reverse Curve?

What to Do If You Fail the Vision Test During Driver's License Annual Inspection?

If you fail the vision test during your driver's license annual inspection, you can retake the physical examination with properly prescribed glasses, as the driver's license physical examination allows corrected vision and does not require uncorrected vision. According to regulations, applicants for large passenger vehicles, tractors, city buses, medium-sized passenger vehicles, large trucks, trolleybuses, or trams must have uncorrected or corrected visual acuity of at least 5.0 on the logarithmic visual acuity chart. For other vehicle types, the uncorrected or corrected visual acuity must be at least 4.9 on the logarithmic visual acuity chart. For those with monocular vision impairment, if the better eye has uncorrected or corrected visual acuity of at least 5.0 on the logarithmic visual acuity chart and a horizontal visual field of at least 150 degrees, they can apply for a driver's license for small cars, small automatic transmission cars, low-speed trucks, three-wheeled cars, or small automatic transmission passenger cars specially designed for the disabled.

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Why Does the Car Radiator Keep Boiling Over?

The reasons why a car radiator keeps boiling over are: 1. Poor engine cooling, especially in small-displacement vehicles using air conditioning in summer, which increases engine load. Long-term accumulation of dirt inside and outside the radiator affects coolant circulation and heat dissipation. 2. Insufficient coolant. Add coolant until the reservoir is half full, then start the engine and let it idle. Observe if the liquid level in the reservoir drops rapidly. If so, it indicates a leak in the cooling system. The normal operating temperature range for an engine is between 90°C and 120°C. Insufficient antifreeze, particularly in summer, can easily lead to engine overheating and other risks. Antifreeze has the characteristics of a high boiling point and low freezing point, with a boiling point around 110°C, effectively maintaining the engine at normal operating temperatures and protecting the engine.

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Why is the wiper noise loud?

Loud wiper noise is caused by aging of the wiper rubber strip or deformation of the wiper. In such cases, you can replace the wiper rubber strip. If the wiper is deformed, you should go to a professional 4S shop for repair by professional technicians. The wiper of the vehicle will not be damaged during normal use, and deformation of the wiper is very rare. In most cases, it is caused by aging of the rubber strip. The vehicle should also be replenished with windshield washer fluid in time, as the washer fluid can protect the wiper. If the vehicle's windshield washer fluid is missing, do not use plain water as a substitute. The wiper, also known as the windshield wiper, is mainly used to remove raindrops and dust from the windshield, improving visibility for the driver during the driving process.

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What does the EPC indicator light mean?

The EPC indicator light can illuminate in two scenarios: during power-on self-test and under other conditions. The power-on self-test is a pre-driving check of all vehicle sensors. Typically, if the engine is not started after power-on, the light will turn off by itself after about 3 seconds. If the EPC light remains on after starting the vehicle or illuminates under other conditions, the common causes include faults in the engine intake system, throttle, fuel system, engine, ECU control unit, or brake lights. Below is a detailed explanation of the reasons for the EPC light illuminating under other conditions: Engine intake system fault: The EPC light will alert when the engine intake is obstructed or insufficient. Throttle fault: Carbon buildup is a common issue with the throttle. Additionally, dirt accumulation can affect intake, triggering the indicator light. Fuel system fault: Examples include substandard fuel, fuel deterioration, or poor fuel atomization. Engine fault: Insufficient engine pressure or issues with components like the intake valve can also cause the EPC light to illuminate. ECU control unit fault: This may involve interference with the vehicle's computer signals or false alarms from the computer. Brake light fault: Situations like non-functioning brake lights, faulty brake switches, or brake circuit issues. Solutions for when the EPC light illuminates: Troubleshoot intake system issues, use the correct fuel grade, clean the throttle, etc. Remove carbon deposits from relevant components. Re-flash ECU-related data. If the EPC light comes on, the driver can first try turning off the engine and restarting it to see if the light remains off. If it does not illuminate again, there may be no issue, possibly just interference affecting the EPC indicator. If the light stays on or frequently illuminates, drive to the nearest service center for professional diagnosis and timely resolution to eliminate safety hazards. The full English name of EPC is Electronic-Power-Control, which translates to electronic power control. Most people refer to it as the engine electronic stability system. The EPC system primarily includes controllers and sensors related to the powertrain. When sensor data is abnormal, the EPC system takes predefined actions to address powertrain issues. Common EPC indicator lights usually display two colors: yellow and red. A yellow EPC fault light means the vehicle can still be driven, but proceed slowly to a repair shop. A red EPC fault light indicates a severe issue, requiring immediate stopping and contacting a technician. Continuing to drive may damage core components or compromise safety.

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Should an automatic transmission car be turned off in N gear or P gear?

For automatic transmission cars, it is recommended to turn off the engine in P gear. The manufacturer's suggested procedure for drivers is: directly shift to P gear, engage the parking brake, turn off the engine, and then leave the vehicle. All automatic transmission models support turning off the engine and removing the key in P gear, but some automatic transmission models cannot remove the key when in N gear. An automatic transmission is a drivetrain device that can automatically shift gears and operate based on the vehicle's speed and engine RPM. Currently, there are four common types of automatic transmissions in vehicles: hydraulic automatic transmission (AT), continuously variable transmission (CVT), automated manual transmission (AMT), and dual-clutch automatic transmission.

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How to shift gears in BYD Song Pro?

BYD Song Pro gear shifting method: This vehicle does not use a conventional mechanical gear lever. The gear lever can only be pushed forward or backward, and the button needs to be pressed when shifting gears before pushing forward or backward. In fact, this type of gear lever is more convenient to use. The BYD Song Pro is a compact SUV under BYD, equipped with a 1.5-liter turbocharged engine across the entire lineup. In terms of body dimensions, the BYD Song Pro measures 4650mm in length, 1860mm in width, and 1700mm in height, with a wheelbase of 2712mm. Exterior-wise, the BYD Song Pro adopts the Dragon Face 2.0 design language, incorporating dragon elements throughout the vehicle: the "Dragon Face" design appears more majestic, the "Dragon Leap" waistline adds dynamism to the body, and "Dragon Claw" elements are used for the first time in the front and rear LED headlights, featuring over 400 LED light sources.

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What is a Reverse Curve?

What to Do If You Fail the Vision Test During Driver's License Annual Inspection?

Why Does the Car Radiator Keep Boiling Over?

Why is the wiper noise loud?

What does the EPC indicator light mean?

Should an automatic transmission car be turned off in N gear or P gear?

How to shift gears in BYD Song Pro?

Why does the car still feel like it's pulling to one side after a wheel alignment?

What is the minimum ground clearance of the Levin car?

How Often Should the Spark Plugs on an Atenza Be Replaced?

Is Filing Required for Changing the Front Grille?