It is assigned by the manufacturer. You can find the GVWR on the VIN plate on the door or door frame of most power vehicles, and on the VIN plate on most trailers. If you add the GVWR from the Truck and trailer and it is more than 10,000 pounds, it's a commercial vehicle. For example, a Ford F150 has a GVWR around 7000 pounds by itself. A tandem axle flat bed trailer usually has a GVWR of 7000 pounds.
NJ Transit trains travel at different speeds depending on the line, express or non-express, and weather conditions. ! The NJ Transit train travels over 90 miles an hour. Just like the speed of lightening !
The current fastest passenger-carrying maglev train can travel at up to 268 mph (431 km/h) and once reached 311 mph (501 km/h) in pre-launch tests. The Shanghai Maglev Train opened in April 2004 and runs 18.95 miles (30.5 km) from the center of the Pudong district of Shanghai to Shanghai Pudong International Airport.