Is It Safe to Place a Gas Cylinder in the Car Trunk?

[Theo]

Liquefied gas tanks should not be placed in the car trunk. According to Article 48 of the "Road Traffic Safety Law of the People's Republic of China," motor vehicles are prohibited from carrying flammable and explosive items. If it is necessary to transport flammable and explosive items, approval must be obtained from the public security authorities, and warning signs must be displayed while adhering to the designated route, time, and speed. If a liquefied gas tank is placed in the car trunk without following regulations, it may easily roll during driving. Additionally, bumps and jolts while driving can cause collisions with the tank. In the event of a severe impact, the gas cylinder may explode. The consequences can be imagined—extremely serious. Therefore, for your own safety and the lives of others, never place a liquefied gas tank in the trunk. If the car trunk is sealed during high summer temperatures, the temperature inside can rise significantly. Under such high-temperature conditions, placing flammable and explosive items in the trunk may lead to danger. For short-distance transportation, it is best to secure the liquefied gas tank to prevent movement.

[LeCorbin]

I've seen many people discussing this issue, and I must say that placing a gas cylinder in the car trunk is absolutely unsafe. With years of experience working with cars, I can tell you that gas cylinders contain high-pressure gas. When the temperature inside the car rises, the pressure inside the cylinder increases dramatically. If the valve loosens or the cylinder ruptures, the leaked gas can easily mix with air and ignite—just a small spark could trigger an explosion or fire. The risk doubles if there are loose items in the trunk or in case of an accident. My advice is to never keep it in the car. If you must transport it, use a professional vehicle or secure it to an external roof rack, ensuring proper ventilation. Safety comes first—this is no joke. I've seen too many people regret their carelessness for the rest of their lives.

[SanEmery]

From a regulatory perspective, gas cylinders are hazardous materials and cannot be casually placed in the trunk of a regular vehicle. Traffic laws strictly prohibit the transportation of flammable substances. If caught, penalties can range from fines and demerit points to detention or even criminal charges. In cases I've come across, many people have faced serious consequences for the sake of convenience, such as being fined thousands of yuan during roadside checks or having their vehicles impounded. Therefore, never attempt to transport them in your car—always use a qualified transport company or specialized containers. Complying with regulations isn't just about avoiding penalties; it's also about respecting the safety of others.

[LeCamille]

Simply put, the reason why a gas cylinder is unsafe in a car is that the compressed gas experiences significant pressure fluctuations with temperature changes. The enclosed trunk space can heat up easily, causing excessive pressure inside the cylinder, which may lead to leaks. The leaked gas can accumulate in the confined space, reaching explosive concentrations. If there is an ignition source, such as an electrical spark or frictional heat, it can instantly trigger a disaster. Physically, this is like a ticking time bomb, with high temperatures and vibrations increasing the risk. When storing, it should be kept away from heat and fire sources, and ventilation should be maintained to minimize the danger.