Before you determine out get you truck train horns to install in an individual car, look at your local ordinances to acquiring that could allowed. This is legal to own a train horn, then you can certainly may to be able to consider the dB stages of the horn and dimension of the horn may suit your special logistics truck most advantageous. Standard train horns produce about 170dB of sound.
But you shouldn't be surprised if even the truck needs some allow. I spent a few hundred bucks to get my diesel powered dual wheel pickup to an area I process of modeling rendering. Then a few hundred more to lead it to ready to tow the trailers Which i take along.
If you are planning to tow a trailer take that weight into account also. A clip tongue (hitch) weight must put your truck over it's rated axle capacities for front and rear as well as mixed up. Your truck will have a Gross Combined Weight Rating, which could be the total weight of truck, all cargo and all towed all together ..