▁limits ▁for ▁a ▁tr uck ▁to ▁convey ▁on ▁a ▁specified ▁portion ▁of ▁road , ▁highway ▁or ▁other ▁transport ▁infrastr ucture , ▁such ▁as ▁air ▁fre ight ▁or ▁water ▁fre ight . ▁In ▁Europe ▁it ▁may ▁be ▁referred ▁to ▁as ▁special ▁transport ▁or ▁heavy ▁and ▁o vers ized ▁transport ation . ▁There ▁may ▁be ▁load ▁per ▁ax le ▁limits . ▁However , ▁a ▁load ▁that ▁exceed s ▁the ▁per - ax le ▁limits , ▁but ▁not ▁the ▁overall ▁weight ▁limits , ▁is ▁considered ▁over weight . ▁Ex amples ▁of ▁o vers ize / over weight ▁loads ▁include ▁construction ▁machines ▁( c ran es , ▁front ▁load ers , ▁back ho es , ▁etc .), ▁pre - built ▁homes , ▁containers , ▁construction ▁elements ▁( bridge ▁be ams , ▁gener ators , ▁wind mill ▁prop ellers , ▁ro cket ▁stages , ▁industrial ▁equipment ). ▁ ▁The ▁legal ▁dimensions ▁and ▁weights ▁vary ▁between ▁countries ▁and ▁regions ▁within ▁a ▁country . ▁A ▁vehicle ▁which ▁exceed s ▁the ▁legal ▁dimensions ▁usually ▁requires ▁a ▁special ▁permit ▁which ▁requires ▁extra ▁fe es ▁to ▁be ▁paid ▁in ▁order ▁for ▁the ▁o vers ize / over weight ▁vehicle ▁to ▁leg ally ▁travel ▁on ▁the ▁road ways . ▁ ▁The ▁permit ▁usually ▁spec ifies ▁a ▁route ▁the ▁load ▁must ▁follow ▁as ▁well ▁as ▁the ▁dates ▁and ▁times ▁during ▁which ▁the ▁load ▁may ▁travel . ▁ ▁When ▁a ▁load ▁cannot ▁be ▁dis m ant led ▁into ▁units ▁that ▁can ▁be ▁transport ed ▁without ▁exceed ing ▁the ▁limitations ▁in ▁terms ▁of ▁the ▁dimensions ▁and /