How to Check the Insurance Purchased by the Driving School?

Is the Film Provided by 4S Stores Actually Usable?

4S stores provided film can be used. Most of the films offered by 4S stores are low-cost, inferior quality films. If you are not particularly particular about it, you can accept the film provided by the 4S store. If you have some standards, you might consider paying extra to upgrade to a better film. Some so-called "original factory films" from 4S stores are essentially just a layer of plastic film, offering no heat insulation effect, having a strong odor, exceeding formaldehyde standards, and bubbling up within a few months. Removing such films often leaves behind a lot of difficult-to-remove adhesive. Here are some precautions to take after applying the film: Do not roll down the windows: After applying the car film, avoid rolling down the windows for a week. In most cases, the car film takes 5-7 days to firmly adhere to the windows. During this period, try to minimize rolling down the windows to prevent the film from shifting before it is fully bonded. Do not wipe: Avoid wiping the newly applied film for a week. Newly applied films are prone to fogging, which is a normal phenomenon during the drying process. Such conditions usually appear within a week to half a month and will disappear on their own. Do not attempt to wipe it away. Avoid using sharp or rough tools to scrape: After applying the car film, never use sharp or rough tools to scrape it. If you are not careful and scrape the film with such tools, the transparency of the film will be significantly compromised.

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How Wide is a 4-Lane Road?

The subgrade width of a bidirectional four-lane ordinary highway is 24.5 meters. For a bidirectional four-lane expressway, the subgrade width is 26 meters. Depending on the nature of the lane, its grade, and the design speed, the width of the lane varies, generally ranging between 2.4 to 4.2 meters. Lane width typically ranges from 2.4 to 4.2 meters. Generally, the higher the design speed of the road, the more likely the lane width is to increase. However, the standard width usually falls between 3.0 to 3.75 meters, with 3.5 meters being the most common. Excessively wide lanes can lead to vehicles driving side by side within the same lane, while lanes that are too narrow may cause vehicles to veer out of the lane. Therefore, it is not recommended for lane width to exceed 3.5 meters or be less than 2.8 meters. However, for national highways, provincial highways, first-class roads, and second-class roads (excluding second-class highways), each lane is 3.75 meters wide. When necessary, an ultra-wide non-motorized vehicle lane of at least 3.5 meters and a sidewalk of at least 4 meters must be established. Each lane on an expressway is also 3.75 meters wide, with additional requirements for green belts, shoulders, emergency lanes, and emergency stopping strips ranging from 1.5 to 3.5 meters.

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Is Driving at 120 km/h in 4th Gear Harmful to the Car?

Driving at 120 km/h in 4th gear will not harm the car. High-speed driving in a low gear on the highway, apart from consuming more fuel, basically does not cause any damage. Here are the relevant details: Reasons why it won't harm the car: The gear range of a manual transmission is broader. In principle, as long as the engine doesn't stall due to incorrect gear selection and doesn't exceed the maximum RPM and speed limit of the gear, it's fine. Of course, the prerequisite is that the engine must be in good lubrication condition, meaning this should only be done when the engine is warmed up. Otherwise, it may lead to increased engine wear. Relationship between car gears and speed: The recommended speed for each gear is approximately 15 km/h for 1st gear, 25 km/h for 2nd gear, 35 km/h for 3rd gear, 55 km/h for 4th gear, and 65 km/h for 5th gear.

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What comes after "one intake, three exhaust" in the 4-cylinder 8-valve adjustment mnemonic?

4-cylinder 8-valve adjustment mnemonic is "one intake, three exhaust, four none". Here are the specific details about automotive valve clearance adjustment: Adjustment method: Taking a 4-cylinder engine with firing order 1-3-4-2 as an example. First, position cylinder 1 at compression top dead center and adjust its valves. Then rotate the engine crankshaft 180 degrees to position cylinder 3 at intake bottom dead center and adjust clearance. Next, rotate the crankshaft another 180 degrees to position cylinder 4 at exhaust top dead center for adjustment, finally adjust cylinder 2 at power top dead center. Adjustment reason: The valve clearance significantly affects engine performance. If cold valve clearance is too small or nonexistent, it will cause abnormal engine operation at operating temperature, making proper adjustment essential.

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What Brand is VIKING Tires?

VIKING tires are the second brand under Continental AG's premium tire line, known as Nordic Viking in Chinese. Continental AG (German: Continental AG, abbreviated as Conti) is a German manufacturer in the transportation industry, specializing in products such as tires, braking systems, electronic stability control, engine injection systems, tachometers, and other automotive and transportation components. Nordic Viking was established in 1931, initially producing rubber and plastic products (including shoes and tires) in Asminderød, Denmark. In 1970, Nordic Viking began manufacturing vehicle tires. Nordic Viking tires were acquired by Continental AG in the 1990s. Tires sold domestically are typically produced at Continental's Hefei plant or its Malaysia facility. VIKING tires feature "Cruiser" shell carcass technology, with a layered structure designed to absorb and cushion vibrations and impacts from uneven road surfaces. These tires also incorporate a conical longitudinal groove design, an asymmetric tread pattern with continuous center ribs, reinforced outer ribs, and interlocking rubber studs in the side grooves. Tips for selecting tires: 1. Prioritize OEM tires, as they are specifically designed to match your vehicle's speed and load capacity. In theory, they should be the first choice for replacements. 2. Pay attention to the tread pattern. Beyond aesthetics, tread patterns significantly impact tire performance. For urban driving in cities like Shenzhen, opt for tires with superior drainage, such as those with small, regular block patterns. For off-road or long-distance travel, choose tires with larger block patterns. Tires, along with the vehicle's suspension system, help absorb road shocks, ensuring a comfortable ride and smooth handling. They also maintain strong traction between the wheels and the road. As one of the most critical components, tires bear the vehicle's weight. Tire characteristics: Tread patterns enhance performance, while wider sections and lower internal pressure improve cushioning. Structurally, tires are categorized into radial and bias-ply types. Storage precautions: Store tires in a dry, ventilated warehouse away from direct sunlight, heat sources, ozone-producing equipment, and chemicals. Avoid contact with oils, flammables, or corrosive substances. Outer or complete tires should be stored upright, not stacked or hung through the center. Large tires should be stored single-layer, while medium and small tires may be double-layered. Rotate them every two months. Inner tubes, if stored separately, should be slightly inflated and hung on semicircular racks, with periodic rotation to avoid folding or stacking. Selection tips: • Choose new tires matching the original size. • Aggressive drivers should opt for wear-resistant tires. For highway driving: • Prioritize tires with the shortest braking distances on both dry and wet surfaces for maximum safety. • For long trips, select tires offering comfort (minimal bumps and noise). • Performance-oriented drivers may prefer high-performance tires. For city driving: • Opt for tires with excellent braking performance to handle urban hazards like pedestrian crossings. • Choose long-lasting treads to withstand engine power, braking forces, and road friction. • Fuel-efficient tires with low rolling resistance can significantly reduce fuel consumption. For VIKING tire maintenance: • Regularly inspect for cracks or deformations. Worn treads lose traction and drainage, compromising performance. Small cracks may lead to blowouts at high speeds. Remove stones from grooves promptly. • Park on level ground, avoiding sharp or rough surfaces. Keep away from oil, acids, or materials harmful to rubber. Avoid turning the steering wheel when parked to prevent accelerated wear. • Do not splash water to cool overheated tires after driving in hot weather or at high speeds. Allow them to cool naturally; never deflate or use water, as this may cause abnormal aging. • Minimize sudden braking to reduce tread wear from skidding.

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Should You Apply the Brakes When Downshifting from 4th to 3rd Gear?

When downshifting from 4th to 3rd gear, there's no need to apply the brakes; simply release the accelerator to reduce speed. This maneuver is tested in the Subject 3 examination. The Subject 3 exam consists of two parts: besides the road test, it includes a safety and civilized driving knowledge test, commonly referred to as "Subject 4," which assesses "driving ethics." The test paper comprises 50 questions, presented in the form of case studies, images, animations, etc., with a full score of 100 and a passing mark of 90. Below is an introduction to the Subject 3 exam content: Subject 3 Overview: Subject 3 includes the road driving skills test and the safety and civilized driving knowledge test. It is part of the motor vehicle driver's license assessment and is the abbreviated term for the road driving skills and safety and civilized driving knowledge test subjects in the motor vehicle driver's examination. The content of the road driving skills test varies depending on the type of vehicle being licensed. Subject 3 Exam Content: The road driving skills test for Subject 3 generally includes: vehicle preparation, light simulation test, starting, straight-line driving, gear shifting operations, lane changing, pulling over, proceeding straight through intersections, left turns at intersections, right turns at intersections, crossing pedestrian crosswalks, passing school zones, passing bus stops, meeting oncoming vehicles, overtaking, making U-turns, and nighttime driving. The safety and civilized driving knowledge test generally includes: requirements for safe and civilized driving operations, safe driving knowledge under adverse weather and complex road conditions, emergency handling methods for situations like tire blowouts, and post-accident handling knowledge.

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How to Check the Insurance Purchased by the Driving School?

Is the Film Provided by 4S Stores Actually Usable?

How Wide is a 4-Lane Road?

Is Driving at 120 km/h in 4th Gear Harmful to the Car?

What comes after "one intake, three exhaust" in the 4-cylinder 8-valve adjustment mnemonic?

What Brand is VIKING Tires?

Should You Apply the Brakes When Downshifting from 4th to 3rd Gear?

What are the tricks behind 4S store trade-in subsidies?

What Causes the 4WD Warning Light to Illuminate?

Is it necessary to pay extra for premium window tinting at a 4S dealership?

What speed in 4th gear does not harm the car?