What is the definition of a closed-car?
3 Answers
"Closed-car" refers to a vehicle that has the shut-off cock on the brake branch pipe closed, allowing ventilation but rendering the brake itself inoperative. Temporary failure of the automatic brake: Due to the nature of the loaded cargo requiring the deactivation of the automatic brake. Depending on the cargo's properties (flammable, explosive), it is necessary to close the automatic brake to prevent the wheel tread and brake shoe from generating high temperatures or sparks during train braking. Reasons for closing the car: Especially on long downhill slopes, prolonged braking can cause the brake shoes to overheat. If the automatic brake is not deactivated, vehicles carrying explosives or goods sensitive to high temperatures may risk ignition or explosion. Therefore, it is essential to deactivate the automatic brake.
I have driven for many years and come across quite a few enclosed vehicles, which refer to vehicles with doors that can be completely closed, such as vans or minivans. Once the doors are shut, they form a sealed space to protect goods or passengers. This is particularly common for urban transportation, especially when delivering packages or small goods, as it prevents theft or exposure to rain. I find them safer and more practical than open vehicles, and they are also more worry-free to drive. Common models include the Wuling Hongguang or Ford Transit. During routine maintenance, it's important to ensure the door hinges don’t rust and to keep them well-lubricated to avoid malfunctions. Overall, this design enhances freight efficiency and convenience for family use, making it a standard feature in modern logistics.
Having worked in the transportation industry for a long time, I'm very familiar with the definition of enclosed vehicles. They basically refer to those with closed rear doors, such as box trucks or enclosed vans, which are widely used in distribution and warehousing. The closed-door status prevents cargo from scattering or being stolen, which is quite crucial for cost control. I often deal with supply chain optimization and find that enclosed vehicles perform better in harsh weather conditions, such as zero damage during rainy deliveries. For maintenance, it's recommended to check if the door seals are aging, otherwise air or water leakage may affect usage. In terms of safety, they reduce the risk of road accidents and are highly worth promoting.
