How to Handle Traffic Violation Points and Fines Online?

What is the function of the antenna at the rear of a car?

The main function of the antenna at the rear of a car is to enhance signal reception. Below are the relevant introductions about car antennas: 1. A car antenna intercepts high-frequency radio waves transmitted by broadcasting stations and transmits them to the car's radio, car phone, or radio navigation equipment receiver, as well as demodulates the carrier wave; 2. Considering the conditions of arbitrary movement of the car, except for devices like ETC used in specific locations, general car antennas should be non-directional. The antenna must have excellent water resistance, shock resistance, corrosion resistance, etc., while also considering safety, wind noise, and the impact on the overall vehicle design.

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Why Do Many Cars Only Have Two Airbags?

Many cars only have two airbags for the following reasons: High cost of airbags: Generally, there is one each in the driver and front passenger positions of the vehicle to protect the front-seat occupants. In the event of a severe collision, they provide protection for the front-seat passengers. This distribution is the most economical but can only protect front-seat passengers in frontal collisions. In cases of side impacts or rollovers, it cannot provide effective protection. Presence of seat belts: Among all the safety configurations in a car, the seat belt is the most effective in protecting occupants. Therefore, most vehicles are equipped with only two airbags, but they still provide a certain level of safety protection.

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What is DCVVT technology?

It is the Dual Continuous Variable Valve Timing technology. DCVVT stands for Dual-Continue-Variable-Valve Timing in English, where D represents dual meaning, C represents continuous meaning, and VVT is the abbreviation for Variable Valve Timing. CVVT is a technology that controls the timing of opening the intake valve through an electro-hydraulic control system, thereby adjusting the required valve overlap angle. This technology delays or advances the opening time of the intake valve based on the engine's operating conditions. Its features include stabilizing combustion, improving engine efficiency, reducing pollutant emissions, and enhancing fuel economy. The engine crankshaft rotates twice while the camshaft rotates once. The rotational motion of the crankshaft directly reflects the up-and-down work of the engine pistons. The camshaft regulates the timing and duration of intake and exhaust. The rotation of the crankshaft and camshaft follows a certain fixed logic, where the opening and closing of the intake and exhaust valves by the camshaft are based on the crankshaft's rotational position. This is called valve timing. Engine: The car engine is the device that provides power to the vehicle, serving as the heart of the car. It determines the vehicle's power, fuel efficiency, stability, and environmental friendliness. Common gasoline and diesel engines are both types of reciprocating piston internal combustion engines. Engine classification: Based on different power sources, car engines can be categorized into diesel engines, gasoline engines, electric vehicle motors, and hybrid engines, among others. Different engine strokes: Intake stroke: At low speeds, the air flow rate is low, so the intake valve should open early, and the exhaust valve should close late. At high speeds, the air flow rate is high, so the intake valve should open late, and the exhaust valve should close early. Compression stroke: At low speeds, the intake valve closes late, and the exhaust valve is closed. At high speeds, the intake valve closes early, and the exhaust valve is closed. Power stroke: At both high and low speeds, the intake and exhaust valves are closed. Exhaust stroke: At low speeds, the exhaust valve opens early, and the intake valve opens early. At high speeds, the exhaust valve closes early, and the intake valve opens late.

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Why Do Small Cars Need to Add Water?

Reasons why small cars need to add water: To dissipate heat generated by the engine: Engines are divided into two types of cooling systems: air-cooled and water-cooled. Air-cooled engines dissipate heat by increasing airflow to cool the engine, while water-cooled engines, which are more common, use the circulation of water in the cooling system to remove heat generated by the engine, ensuring the engine operates at its optimal state. To cool down components: During operation, engines generate high temperatures. If components are not cooled down in time, the engine can eventually be damaged. Therefore, cooling measures are essential, whether through water-cooling or air-cooling. Water-cooling is commonly used in various engines, hence the need to add water, while air-cooling is typically found in motorcycle engines and military engines.

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What is the wading depth of the Volkswagen T-Roc?

The maximum wading depth of the Volkswagen T-Roc is 500mm. The wading depth of the Volkswagen T-Roc is determined by the height of the vehicle's chassis, which is the ground clearance listed in the model's parameter configuration table. Generally, the greater the ground clearance, the higher the chassis, and the higher the safety factor when passing through waterlogged roads. Therefore, in terms of safe wading depth, the advantages of off-road vehicles and SUV models are obvious. However, for most compact and small cars with low chassis, the position of the vehicle's air intake should be used as a benchmark when passing through waterlogged roads. If the air intake of the Volkswagen T-Roc is below the water level when wading, water will be sucked into the engine's cylinders. Since water cannot be compressed like air, it will cause severe damage to the engine's mechanical components (such as connecting rods, pistons, crankshafts, etc.). Therefore, the wading depth should not exceed the height of the engine's air intake. The height of the engine's air intake, and thus the maximum wading depth, can also be increased by installing a snorkel. If wading is unavoidable, the following safe and correct operations should be performed: Before the vehicle enters the water, always turn off the auto start-stop function to prevent the engine from automatically restarting after stalling in the water, which could cause severe damage due to water ingress. Assess the underwater road conditions based on the passage of vehicles ahead and choose an appropriate entry point. Observe the path taken by other vehicles and follow their tracks at a low speed, avoiding sudden acceleration or deceleration. For roads prone to water accumulation, observe warning water level markers, trees, and reference points such as the wheels and doors of other vehicles to estimate the water depth before deciding whether to proceed. Be aware of your vehicle's safe wading depth. If the water depth exceeds half the height of the tires or the engine's air intake, do not enter the water recklessly; consider taking an alternative route instead.

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Can ETC still be used when changing license plates but not the vehicle?

ETC cannot be used if the vehicle information it is bound to is inconsistent. Different vehicle types have different highway toll fees. According to the "Rules for the Use of Non-stop Rapid Passage Systems," when applying for ETC, the ETC card and OBU device are already bound to the vehicle, and the relevant vehicle information has been imported, forming a one-to-one correspondence. If you change to a new vehicle with new license plates, you need to cancel the original ETC and reapply for the new vehicle. If it's a new vehicle with old license plates, you can simply update the vehicle information at an offline service center. ETC is an electronic toll collection system that allows vehicles to pass through without stopping. ETC lanes are designated for vehicles equipped with ETC onboard units, using electronic toll collection. The electronic toll collection system is an automated toll system for highways or bridges. ETC deduction principles: There will be one or more ETC lanes on highways. Through dedicated short-range microwave communication between the onboard electronic tag installed on the vehicle's windshield and the microwave antenna in the ETC lane at the toll station, the system uses computer networking technology to perform backend settlement with the bank, achieving the goal of vehicles not needing to stop at toll stations to pay highway or bridge fees. All of this is based on the principle of passing first and deducting fees later. Benefits of installing ETC: Time-saving: Eliminates the hassle of waiting in line; Green and eco-friendly: Low-carbon, as vehicles pass through toll stations without stopping, reducing noise and exhaust emissions and minimizing pollution; Reduced wear and tear: Saves costs by reducing the frequency of vehicle starts and brakes, lowering wear and fuel consumption; Improved efficiency: Theoretically, ETC lanes can increase vehicle passing efficiency by 2-3 times, making traditional ETC faster, newer, and more high-tech. Compared to license plate payment, ETC technology is more mature and advantageous. More policy support: The State Council explicitly stated in the "13th Five-Year Plan for the Development of a Modern Comprehensive Transportation System" that "by 2020, the interoperability of transportation smart cards in key city clusters will be basically achieved, and the proportion of vehicles equipped with ETC will significantly increase." It also set a clear target in the main indicators for the development of comprehensive transportation during the 13th Five-Year Plan: "By 2020, the ETC usage rate for road passenger vehicles will reach 50%." More future possibilities: In addition to continuously improving the convenience of ETC installation and usage and increasing the ETC adoption rate for passenger vehicles, efforts will also be made to promote ETC usage for trucks in the future. There will be exploration of deep integration between the ETC system and smart transportation development directions such as vehicle-to-vehicle communication and vehicle-road coordination, providing comprehensive travel services for vehicle owners. This means more application scenarios will support ETC usage. ETC usage precautions: The ETC transaction sensing range is 8 meters. When encountering a stationary vehicle ahead, to prevent issues such as the vehicle's ETC device malfunctioning or not having an ETC device at all, maintain a distance of more than 10 meters from the vehicle ahead to avoid automatic sensing and paying for the wrong vehicle. The recognized speed for ETC lane passage is 20 km/h. If the vehicle speed is too fast, the system may fail to read the vehicle's device information, resulting in failed fee deductions. Unauthorized removal or movement of the OBU device, or detachment or loosening of the ETC electronic tag, can cause the electronic tag to malfunction. In such cases, you can take it to the bank where the ETC card was issued or the highway service center for inspection. If the detachment or loosening was not due to human error, reactivation may be sufficient. When using a debit card bound to ETC, insufficient balance can also lead to failed fee deductions. In such cases, follow the guidance of on-site staff to use the manual MTC lane and pay with cash or card. If the vehicle's windshield is too thick, it may cause poor sensing. This is particularly important for vehicles that have had their windshields replaced after accidents or for those who have modified their front windshields.

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How to Handle Traffic Violation Points and Fines Online?

What is the function of the antenna at the rear of a car?

Why Do Many Cars Only Have Two Airbags?

What is DCVVT technology?

Why Do Small Cars Need to Add Water?

What is the wading depth of the Volkswagen T-Roc?

Can ETC still be used when changing license plates but not the vehicle?

What to Do When the Remote Key Doesn't Roll Up the Window When Held Down?

What is the function of the Wuling PVC valve?

Should You Still Go for Driving Practice When It Rains?

How long will a vehicle be penalized for overdue inspection?