This is a very subjective question, it would depend on what you define is being a different type of truck, but some of the most common different types of trucks are: pick-ups, semis, diesels, and tow trucks. There are breakdowns within these that some might consider a different type but these are probably the main 'types' of truck.
derf
There are many types of trucks that are considered large. Monster trucks are some of the biggest trucks there are.
Various types of trucks can be found on Craigslist, including pickup trucks, box trucks, dump trucks, and semi-trucks.
Various types of trucks can be found on Craigslist, including pickup trucks, commercial trucks, box trucks, dump trucks, and more.
There are many types of semi trucks available for purchase from Kenworth Trucks. A few of these semi trucks are T880, T680, T600, T700, W800 and also a W900. Kenworth dealers will also sell used trucks from other manufacturers which were traded in. Aside from selling Class 5 - 8 Kenworth trucks, some Kenworth dealerships are also dealers of Hino trucks.
Trucks deliver many types of cargoes across America.
There are many types and makes of engine in fork trucks
Bruder Toys makes several different types of toy trucks for children. Some of the types of trucks are dump trucks, 18 wheeler trucks, and pick up trucks.
Many trucks can be adjusted to fit a wheelchair lift. Mostly vans are used for wheelchair accesebility though.
Ford offers many types of trucks, from pick-up trucks to the usual SUV's. My favorite SUV made by for has to be the "Ford Expedition", not the greatest fuel manager but great for big families. If your a heavy construction worker I recommend the "Ford F-150".
There are way too many different types of vehicles that can be explained but the main types are obviously wheeled veichles (cars, bikes and trucks)... There are also the boats
Depending on the types of trucks you are looking for, you can find trucks at http://www.penskeusedtrucks.com/. You can also find trucks at http://www.buyatruck.net/