From Longman Business Dictionary
haulagehaul·age /ˈhɔːlɪdʒˈhɒːl-/ British EnglishBrE, hauling /ˈhɔːlɪŋˈhɒː-/ American EnglishAmE noun [uncountableU]COMMERCETRANSPORT the business of carrying goods by road or railRail freight charges are high compared with those of road haulage.
a successful haulage company
→ general haulage → heavy haulage