The Tanker is a tractor unit with sleeper cab, similar to the Linerunner. The engine power the two rear axles.
The Linerunner looks pretty similar to the Tanker to me, but it is shorter, has a taller sleeper, and a chrome trim piece around the back of the sleeper cab.
The Linerunner is a tractor unit with sleeper. The engine drives the rear two axles.
The Linerunner looks pretty similar to the Tanker to me, but it is shorter, has a taller sleeper, and a chrome trim piece around the back of the sleeper cab.
The Firetruck is a large, rear-wheel drive emergency truck.
There are two versions: one that has a watercannon up top you can use to knock down pedestrians and use for the fire missions, and a laddertruck that cannot.
They can be found at the firestations in the three cities.
The Barracks is a large military truck with ammo boxes in the back. The engine sends power to all three axles. Oddly, the Barracks has a siren (but no lights) you can turn on and off by tapping the horn.
The Barracks is very similar to the Flatbed, but it has a different grill. The front axle of the Flatbed isn't powered, either.
There are three variants of the Barracks: one with no top, one with a camo top, and one with a canvas top.