A pallet for transporting trolleys having a chassis carried and made movable by a drive system, said pallet (10; 110) comprising: - a bottom plate (20; 120) having at least one track (51, 52; 151, 152, 190) extending between a first end (21; 121) of said bottom plate (20; 120) and a second end (22; 122) of said bottom plate (20; 120), which is an opposite end to said first end (21; 121), said at least one track (51, 52; 151, 152, 190) being provided for the movement of a single row of at least one said trolley (60; 160) on said pallet (10; 110), and having at least one tunnel (27; 127) forming, on said at least one track (51, 52; 151, 152, 190), two lower sections (53; 153) separated from an upper section (54; 154), said tunnel (27; 127) being configured to enable the insertion of a fork of a lifting system, for taking said pallet (10; 110); - at least one first blocking member (40; 140) mechanically connected to said bottom plate (20; 120) at said first end (21; 121) of said bottom plate (20; 120) and movable between a first position in which said at least one track (51, 52; 151, 152, 190) is in an open state at said first end (21; 121) and a second position in which said at least one track (51, 52; 151, 152, 190) is in a closed state at said first end (21; 121); - at least one second blocking member (40; 140) mechanically connected to said bottom plate (20; 120) at said second end (21; 121) of said bottom plate (20; 120) and movable between a first position in which said at least one track (51, 52; 151, 152, 190) is in an open state at said second end (22; 122) and a second position in which said at least one track (51, 52; 151, 152, 190) is in a closed state at said second end (22; 122); said at least one first blocking member and second blocking member (40; 140) each being configured, in their second position, so as to be able to be in contact with said chassis of a said trolley (60; 160); said pallet (10; 110) being characterized in that said at least one first and at least one second blocking members (40; 140) are mechanically connected to one of said lower sections (53; 153) and are all configured to be movable independently of each other. - a bottom plate (20; 120) having at least one track (51, 52; 151, 152, 190) extending between a first end (21; 121) of said bottom plate (20; 120) and a second end (22; 122) of said bottom plate (20; 120), which is an opposite end to said first end (21; 121), said at least one track (51, 52; 151, 152, 190) being provided for the movement of a single row of at least one said trolley (60; 160) on said pallet (10; 110), and having at least one tunnel (27; 127) forming, on said at least one track (51, 52; 151, 152, 190), two lower sections (53; 153) separated from an upper section (54; 154), said tunnel (27; 127) being configured to enable the insertion of a fork of a lifting system, for taking said pallet (10; 110); - at least one first blocking member (40; 140) mechanically connected to said bottom plate (20; 120) at said first end (21; 121) of said bottom plate (20; 120) and movable between a first position in which said at least one track (51, 52; 151, 152, 190) is in an open state at said first end (21; 121) and a second position in which said at least one track (51, 52; 151, 152, 190) is in a closed state at said first end (21; 121); - at least one second blocking member (40; 140) mechanically connected to said bottom plate (20; 120) at said second end (21; 121) of said bottom plate (20; 120) and movable between a first position in which said at least one track (51, 52; 151, 152, 190) is in an open state at said second end (22; 122) and a second position in which said at least one track (51, 52; 151, 152, 190) is in a closed state at said second end (22; 122);