What Should Be Noted for the Subject 3 Driving Test?

What is the appropriate tire pressure for high-speed cars?

High-speed cars should maintain a tire pressure between 2.3 to 2.5 bar. Tire pressure refers to the air pressure inside the tires, and improper tire pressure can have the following effects: 1. Reduced friction and adhesion of the tires, affecting braking performance; 2. Causes steering wheel vibration and deviation, lowering driving comfort; 3. Accelerates localized wear of the tread pattern in the center of the tire, reducing tire lifespan; 4. Increases vehicle vibration, indirectly affecting the lifespan of other components. Methods for tire maintenance include: 1. Avoid curbs and potholes to prevent sidewall ply breakage and tire bulging; 2. Regularly remove debris from tire treads to avoid blowouts; 3. Check tire wear and replace them promptly; 4. Perform tire rotation to prevent excessive wear; 5. Regularly check tire pressure, ensuring it is neither too high nor too low.

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What Type of Fire Extinguisher Should Be Used for a Car Fire?

For car fires, a portable dry powder fire extinguisher is recommended, as it is suitable for extinguishing initial fires involving oils, flammable gases, and electrical equipment. Car fire extinguishers are generally placed in: 1. the glove compartment inside the car; 2. next to the seat; 3. the trunk. Vehicle fire extinguishers are categorized into: 1. aerosol fire extinguishers; 2. dry powder fire extinguishers; 3. ultra-fine dry powder fire extinguishers; 4. carbon dioxide fire extinguishers; 5. water-based fire extinguishers. Precautions for using car fire extinguishers include: 1. Do not cover the fire extinguisher with items; it should be easily accessible for quick retrieval; 2. Fire extinguishers are only for initial fire suppression; 3. Use the fire extinguisher correctly; 4. Check the pressure of the fire extinguisher monthly; 5. Fire extinguishers have an expiration date and should be configured and replaced as required.

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What kind of oil should be added to the Sagitar 1.6L engine?

Sagitar 1.6L engine should be filled with 5W40 or 10W40 engine oil. Taking the 2015 Sagitar as an example, it belongs to the compact car category, with body dimensions of: length 4655mm, width 1780mm, height 1453mm, a wheelbase of 2651mm, a fuel tank capacity of 55L, and a curb weight of 1300kg. The 2015 Sagitar features a front MacPherson independent suspension and a rear multi-link independent suspension. It is equipped with a 1.6L naturally aspirated engine, delivering a maximum horsepower of 110PS, a maximum power of 81kW, and a maximum torque of 155Nm, paired with a 5-speed manual transmission.

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How Many Turns Can a Car Steering Wheel Make?

Small car steering wheels can typically turn 2 full rotations or one and a half rotations. The function of the steering wheel is to convert the force applied by the driver on the edge of the steering wheel into torque, which is then transmitted to the steering shaft to achieve the purpose of changing the vehicle's direction. Steering wheels are categorized into: single-spoke steering wheels, dual-spoke steering wheels, triple-spoke steering wheels, and quad-spoke steering wheels. The method to adjust the height of the steering wheel is: 1. Locate the handle at the bottom of the steering wheel; 2. Press down the handle to adjust. The reasons for noise when turning the steering wheel include: 1. Insufficient lubrication of the steering column, leading to high friction; 2. Lack of power steering fluid; 3. Issues with the universal joint; 4. Aging and hardening of the rubber bushings on the suspension stabilizer bar links; 5. Damage to the thrust bearing.

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Is It Possible to Coast in Neutral When Going Downhill?

It is not advisable to coast in neutral when going downhill. Instead, you should engage an appropriate gear to utilize the engine's braking effect to reduce the vehicle's coasting speed. The correct method for descending a hill is: 1. Depress the clutch and brake pedals, then shift the gear lever into neutral; 2. Depress the clutch and brake pedals, turn the key to the first position to allow the vehicle to perform a self-check; 3. Turn the key further to start the engine; 4. After the engine starts, engage first gear; 5. Slowly release the clutch and brake pedals, and when the vehicle's vibration becomes noticeably strong, slightly release the brake to begin moving. Precautions for downhill driving include: 1. Reduce speed before starting the descent to enter the downhill section at a slow speed; 2. Shift into an appropriate gear before entering the downhill section, not after; 3. Do not coast in neutral on downhill sections; always engage an appropriate gear to use the engine's braking effect to control speed; 4. Test the brakes to ensure they are functioning properly before descending; 5. Avoid sudden steering movements on downhill sections, as they can easily cause the vehicle to overturn; 6. Maintain a distance of at least 50 meters from the vehicle ahead.

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Where Are the Clutch, Brake, and Accelerator Pedals?

In a manual transmission car, the three pedals from left to right are the clutch pedal, brake pedal, and accelerator pedal. In an automatic transmission car, the left pedal is the brake pedal, and the right pedal is the accelerator pedal, with no clutch pedal. Manufacturers designed this layout based on ergonomics to ensure drivers can react quickly in emergencies. Note: These two pedals should only be controlled with the right foot—never use the left foot to control one pedal. Precautions for controlling the accelerator: When pressing or releasing the accelerator pedal, apply gentle force to ensure smooth and gradual movements. Select the appropriate gear to keep the engine running mostly at medium speed and larger throttle openings for fuel efficiency. Coordinate releasing the clutch with pressing the accelerator smoothly and swiftly. Before stopping or turning off the engine, release the accelerator pedal first—avoid revving the engine abruptly. Braking precautions: Press the brake pedal gradually, avoiding sudden braking to prevent the car from jerking forward. Brake early, maintaining a safe following distance, and anticipate road conditions to brake in advance. For long downhill braking, use the automatic parking system to assist, preventing overheating of the brake pads. When braking in curves, slow down before entering the curve, then accelerate out of it. On rainy days or gravel roads, use intermittent braking (pump the brakes) to prevent skidding. Tips for new drivers: Check tires before driving: Since tires are the only contact point with the road, poor tire condition may lead to blowouts at high speeds, endangering safety. Drive at a steady speed—avoid sudden acceleration or deceleration to give surrounding vehicles enough reaction time. Always signal before overtaking—use flashing high beams, honking, or other methods to alert the vehicle ahead. Maintain a safe following distance to avoid collisions if the leading vehicle brakes suddenly. Avoid using your phone while driving. If you miss an exit on the highway, never reverse or stop abruptly.

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