Assuming you're referring to US law, in most states, it's the same as the limit for regular passenger cars, with the exception of certain designated areas (for example, steep grades). Some states have a 55 MPH speed limit for trucks - Ohio, Michigan, Illinois, and California are among them. Texas has a nighttime speed limit of 65 for trucks.
The number of axles on a commercial motor vehicle can vary widely depending on its design and purpose. Typically, most commercial trucks have between two to five axles. For example, a standard semi-truck with a trailer usually has five axles, while smaller delivery trucks may have two or three. Specialized vehicles, like heavy-haul trucks, can have even more axles to support heavier loads.
probably 8 or more
Most trucks, buses, and vehicles towing trailers are restricted to a maximum speed of 55 mph on freeways. This limitation is put in place to ensure safety on the roads due to their size and weight posing a higher risk for accidents at higher speeds.
They come in many sizes and configurations. They could be single axle trucks, tandem axle trucks, tandem axle truck with additional lift axles, tandem axle trucks with a twin steer setup (and these may also have additional lift axles, as well), and even tractor-trailers with mixer trailers. You'd have to be a little more specific as to which one you had in mind.
there is more then one speed sensor i know there is one in the transmission and one around the front axles and one more not to sure where it could be
speed limit at uncontrolled intersections in Alberta is approx. 25 km/hrs because the roads are narrows and vehicles are parked on both sides.If your speed is more than 25 it is hard to identify the hazards.
you need to be a little more specific.
No, but they allow you to tighten down the trucks a lot more without sacraficing speed.
we have a limit of 75 in some states and no speed limit in some states out west
Exceeding the maximum speed limit in Pennsylvania is 30+ mph over the speed limit. I was going 31 over the speed limit and received a ticket for $190.00. Depending on the area, the ticket could be more or less, but I wouldn't think it would be cheap.
Where? Be more specific!
Trucks are larger heavy, and more powerful. They take more fuel.Using the formula Force = Mass x Acceleration, You know that with more to get the same Acceleration (speed) with more Mass, you need way more Force (which is made by fuel being burnt.)