Why's it called a 2 ton???

[Gokart Mozart]

THE ROLE OF GVWR AND GCWR IN SPECIFYING WORK TRUCKS
By Bob Raybuck, NTEA Director of Technical Services

This article was published in the February 2018 edition of NTEA News.

Often, gross vehicle weight rating (GVWR) and gross vehicle weight (GVW) are thought to be the same, but they are not. A truck’s GVWR is the maximum weight rating established by the chassis manufacturer. GVW is the total weight of the truck and payload at a point in time.

There’s a common misconception that a truck’s GVWR is determined by adding gross axle weight ratings (GAWRs) together for all axles. Although this was a common way of calculating GVWR many years ago, it’s no longer an accurate method. The chassis manufacturer task of establishing a vehicle GVWR is much more difficult today due to advancement of safety system standards and how vehicles meet these requirements. This is why many trucks have a GVWR much lower than the combined axle ratings. It is not uncommon for a truck with a GVWR of 19,500 pounds to have a front axle rated at 7,500 pounds and a rear axle rated at 14,700 pounds. Safety standards that apply to braking, vehicle stability, and chassis manufacturer internal standards for durability, dynamic stability and handling can restrict GVWR even though the sum of the axle ratings exceeds 22,000 pounds. In this instance, the OEM set the GVWR at 19,500 pounds based on test results and vehicle dynamic performance to ensure a safe, reliable truck.

A specific vehicle’s GCWR is based on parameters established by chassis manufacturers. The manufacturer makes an assessment in accordance with SAE International test protocols, determining maximum GCWR. Additionally, the OEM runs stringent tests based on internal requirements which may include testing total GCWR braking capability using only the towing vehicle chassis braking system. GCWR is the total weight of the truck pulling the trailer and the trailer itself. The truck chassis dictates proper GCWR for safe operation of the combination truck and trailer.

When end users and fleets are looking to either purchase or specify the proper chassis for their needs, different driver qualifications and regulations are part of the process. A key driver qualification is the commercial driver’s license rule, better known as CDL. Many fleets prefer to specify their chassis in a way that allows drivers without a CDL to operate their vehicles. Federal CDL requirements help clarify what’s considered a non-CDL truck and how GVWR comes into play. Each individual state may have more stringent CDL licensing requirements.

However, every state must follow federal requirements as a baseline. One element in federal CDL operator requirements is a vehicle’s GVWR. The federal requirement specifies that, when a vehicle has a GVWR of 26,000 pounds or less, the operator does not need a CDL. However, this does not mean the truck GVW can be loaded above the GVWR of 26,000 pounds and operated by a non-CDL driver. Federal requirements state the GVW must, in addition, be 26,000 pounds or less. CDL requirements become more confusing when the vehicle is towing a trailer.

more:http://www.ntea.com/NTEA/Member_bene...rk_trucks.aspx


one possibility is they wanted to keep the truck under cdl class ratings.