
Four-axle vehicles have a load limit of 31 tons. They are flexible, stable, and in high demand in the industry, but their body weight is at least around 10 tons. Therefore, some regions still set the overload limit for four-axle vehicles at 36 tons. However, according to the official regulations, the load limit for four-axle vehicles will be uniformly set at 31 tons. Overload and over-limit criteria include: total width not exceeding 2.55 meters or length not exceeding 18.1 meters, total height of the vehicle and cargo exceeding 4 meters from the ground, total width of the vehicle and cargo exceeding 2.55 meters, total length of the vehicle and cargo exceeding 18.1 meters, total mass of a two-axle truck and its cargo exceeding 18,000 kilograms, total mass of a three-axle truck and its cargo exceeding 25,000 kilograms, total mass of a three-axle vehicle and its cargo exceeding 27,000 kilograms, and total mass of a four-axle truck and its cargo exceeding 31,000 kilograms.

I've been driving a four-axle truck for several years, and I remember the load limit is 31 tons, which is the standard on national highways. Once, to make a delivery on time, I overloaded by 2 tons and got caught at the toll station, resulting in an 800-yuan fine and the risk of penalty points. That delivery was delayed for several days. Now, I always carry a small portable scale to check the total weight before loading to avoid exceeding the limit. Four-axle trucks have a long wheelbase, and overloading can make braking unstable, especially dangerous in rainy weather. I recommend regularly checking tires and suspension systems, as overloading accelerates wear and tear, leading to expensive repairs and business delays. By the way, standards may vary slightly in different provinces. For example, mountainous areas sometimes have stricter limits, so it's safest to check local regulations before long-distance trips.

As a vehicle owner, I learned from traffic regulations that four-axle trucks have a load limit of 31 tons, mainly applicable on highways and national roads. Don't underestimate this number—it's designed to protect both vehicles and road infrastructure. Exceeding it even slightly could lead to roadside inspections and fines of thousands of yuan. My truck is equipped with a GPS weight monitoring system that provides real-time alerts to prevent overloading. During daily operations, I calculate the cargo capacity in advance based on shipment volume: for example, the 31-ton limit includes the truck's own weight, so the actual cargo load is around 25 tons. Overloading is not only unsafe but also increases the risk of road and bridge damage, potentially leading to compensation claims. Recent regulatory updates are piloting reduced load limits in some regions, so drivers transporting goods elsewhere should stay updated to avoid issues.

In repair shops, it's common to see four-axle trucks sent for maintenance due to overloading, typically with a load limit of 31 tons that should not be exceeded. Overloading accelerates bearing and spring failures, with repairs starting at several thousand yuan per incident. Use common sense when loading: keep the cargo length within the frame and distribute the weight evenly. In practice, many drivers overlook calculating the vehicle's own weight and only consider the cargo weight, leading to overload fines. For safety, regularly maintain the chassis and check for signs of damage. Overloading increases road wear, especially making skidding more likely in rainy conditions. Remember, load limits are for safety, not just for show.


