Complex sentence: Double deckers or deckers are trailers with either a fixed, hinged or moveable second floor to enable them to carry more palletised goods, in general a double decker can carry 40 pallets as opposed to 26 for a standard trailer.
Split into simpler sentences: Double deckers or deckers are trailers with either a fixed, hinged or moveable second floor to enable them to carry more palletised goods. In general a double decker can carry 40 pallets as opposed to 26 for a standard trailer.