Browse

Antiques Collectibles Apparel Baby Kids Items Books， Movies And Music Electronics Free Stuff Garden Outdoor Health Beauty Home Goods Home Improvement Supplies Musical Instruments Office Supplies Pet Supplies Sporting Goods Ticket Toys Games Transportation Others

Used Cars New Cars Others

Business Crafts Design And Web Events Home Improvement Legal Lessons Personal Pets Photography Repair And Technical Support Wellness Writing， Translation， And Transcription Others

Activities & Groups Artists & Musicians Classes & Lessons Events Friendship & Networking Lost & Found Rideshare Sports Teams Volunteers Travel & Travel Partners Skills & Language Swap Other

What certificates are required to drive a 4.2 refrigerated truck?

1 Answers

StAugust

07/30/25 8:34am

Obtain an operating permit and a professional qualification certificate. More details are as follows: Required certificates: The certificates required to drive a refrigerated truck mainly depend on whether it is a blue license plate or a yellow license plate. For a 4.2 refrigerated truck with a total mass of less than 4,500 kilograms, an operating permit and a professional qualification certificate are not required. For trucks over 4.2 meters, these certificates are necessary. According to the "Regulations of the People's Republic of China on Road Transport": To apply for freight transport operations, after completing the relevant registration procedures with the industrial and commercial administrative authorities, applications shall be submitted in accordance with the following provisions, along with the relevant materials that meet the conditions specified in Articles 21 and 23 of these Regulations: For freight transport operations other than hazardous goods transport, apply to the county-level road transport management authority; for hazardous goods transport operations, apply to the municipal road transport management authority of the relevant district.

Was this review help?

6

5

Share

More Forum Discussions

Can You Make a U-Turn at a Circular Traffic Light?

Circular red lights do not permit U-turns. Reasons prohibiting U-turns at circular red lights: At intersections without prohibited U-turn signs, drivers may execute U-turns during green light phases, provided they do not impede the normal flow of other vehicles or pedestrians. According to Article 49 of the Implementation Regulations of the Road Traffic Safety Law of the People's Republic of China, motor vehicles are prohibited from making U-turns at locations with no U-turn or no left turn signs/markings, as well as at railway crossings, crosswalks, bridges, sharp curves, steep slopes, tunnels, or other potentially hazardous road sections. Permissible U-turn conditions: Motor vehicles may make U-turns at locations without prohibited U-turn or no left turn signs/markings, but must not obstruct other properly moving vehicles or pedestrians. At intersections without dedicated non-motor vehicle or pedestrian traffic signals, cyclists and pedestrians should follow the indications of motor vehicle traffic signals.

Is Waxing Necessary with a Paint Protection Film?

Waxing can be optional. Functions of Waxing: Waxing is intended to protect against corrosion from acid rain, dust, and other corrosive substances. A paint protection film is not indestructible; prolonged exposure to contaminants like acid rain can accelerate its deterioration. Without regular maintenance of the paint protection film and frequent cleaning of the vehicle, the film will gradually age, lose its luster, and diminish its optimal aesthetic appeal. Functions of Paint Protection Film: Waxing is not absolutely essential for a paint protection film because high-quality films inherently possess strong anti-corrosion properties and are designed to protect the car's paint. However, nothing in the world is completely immune to corrosion, and paint protection films are no exception. Acid rain, dust, bird droppings, and other contaminants can still erode the film and affect the vehicle's surface shine, so the paint protection film also requires protection.

What Does the Engine Displacement Number Represent?

The size of a car's engine displacement represents the power of the vehicle. Introduction to Engine Displacement: Displacement refers to the volume of exhaust gas emitted by the engine during one complete working cycle. Generally, a larger displacement means stronger power but also higher fuel consumption. The size of a car's engine displacement can serve as an indicator of the vehicle's class. Total engine displacement is the sum of the working volumes of all the engine's cylinders, measured in liters. Explanation of Engine Displacement Sizes: In China, car classification is based on the total engine displacement. Vehicles with a displacement of 1 liter or less are classified as micro cars. Those with a displacement greater than 1 liter but less than or equal to 1.6 liters are considered standard-class cars. Cars with a displacement greater than 1.6 liters but less than or equal to 2.5 liters fall into the mid-class category. Vehicles with a displacement greater than 2.5 liters but less than or equal to 4 liters are classified as upper mid-class cars.

What Causes Engine Idle Vibration After Hard Braking?

High-speed driving followed by braking to decelerate causing engine vibration is a normal phenomenon. Introduction to Idle: When an engine runs without load, it is called idling. During engine operation, if the accelerator pedal is completely released, the engine enters idle state. The rotational speed during engine idling is called idle speed. Idle speed can be adjusted by modifying parameters such as throttle opening. Generally, the optimal idle speed is the minimum RPM at which the engine does not vibrate. Function of Idling: Avoiding wasted work - Idling overcomes the engine's internal friction to maintain minimum rotational speed, providing convenience for drivers during various driving conditions and temporary stops. For instance, when waiting at traffic lights or in congested traffic, although the duration may be brief, temporarily turning off the engine can achieve immediate energy-saving and emission-reduction effects.

Why is there abnormal noise when turning the steering wheel?

The reasons for abnormal noise when turning the steering wheel may include: sound from the turn signal rebound clip, noise from the steering column dust cover, or interference noise from the clock spring. Noise from the steering column dust cover: If the noise comes from below the steering wheel while driving or turning the wheel stationary, it is likely due to the steering column dust cover. This friction noise is caused by lack of lubrication and can be resolved by applying some grease. Interference noise from the clock spring: If the noise comes from inside the steering wheel when turning, the issue may be with the clock spring interference. Try removing the steering wheel and applying grease to the clock spring. If the noise persists, the clock spring may need replacement. Noise from the shock absorber thrust bearing: If the noise comes from outside the vehicle when turning the steering wheel, it might be due to insufficient lubrication in the shock absorber thrust bearing. Open the hood to check if the noise originates from the thrust bearing. If so, applying grease may solve the issue. If the noise continues, the thrust bearing may need replacement.

Does idling a car with the AC on consume more fuel?

Using the air conditioning while the car is idling consumes more fuel in cooling mode, but not in heating mode during winter. Winter heating doesn't consume fuel: When using AC for cooling, the air conditioning system is working, powered by the car's engine. This increases the load and thus fuel consumption. However, using the heater in winter doesn't consume additional fuel. How heating works: The warm air comes from heat generated by the engine operation. After the engine's cooling system dissipates heat from the engine, a fan directs this heat into the cabin to provide warmth. When not using the heater, the fan stops and the vents close, allowing all heat to dissipate into the atmosphere. Therefore, car heating is essentially waste heat recycling and doesn't consume additional fuel. AC button: The AC button controls the air conditioning compressor. You must press it when using cooling in summer. However, heating simply utilizes the car's internal heat circulation and doesn't require activating the AC compressor. To use the heater, you only need to adjust the temperature controls without pressing the AC button.

Trending Ranking

What does the fuel pump recall for the 10th-generation Civic mean?

Is 7L/100km Fuel Consumption Considered High?

How to Calculate Three Inspection Cycles for Motor Vehicles?

What to Do When Your Driver's License Points Are Insufficient?

What to Do If You Fail the Color Blindness Test During Driver's License Physical Examination?

What are the differences between new energy vehicles and fuel-powered vehicles?

Will the Direction Be Out of Control if the Rear Tire Blows Out?

Does stalling a manual transmission car when shifting gears affect the vehicle?

What is the reason for the increase in idle speed after just adding gasoline to a motorcycle?

Does changing the steering wheel affect the car?

More Forum Discussions

How Many Spark Plugs Does a Four-Cylinder Motorcycle Have?

What is the diameter of a motorcycle handlebar?

Is it harmful to shift gears while coasting downhill in neutral on a motorcycle?

Will the engine automatically shut down when overheating?

Help

Cookie

Cookie Settings

© 2025 Servanan International Pte. Ltd.