Motorized door for closing an area, said area being defined by a first and second lateral edges which extend parallel to a longitudinal axis by a proximal transverse edge extending parallel to a transverse axis normal to the longitudinal axis and a distal transverse edge, transverse to the longitudinal axis wherein said motorized door comprises: A shutter of dimensions suitable for closing the area, and comprising a leading edge substantially parallel to the distal transverse edge of the area, A motorized driving mechanism suitable for moving the leading edge of the shutter along the longitudinal axis between an open position (x1,1), wherein the leading edge is adjacent to the proximal transverse edge and a closed position (x1,0), wherein the leading edge contacts the distal transverse edge, in a first direction (α) to close said area and in a second direction (β) to open said area; An array of n detection cells (s1, s2,..., sn), wherein n ≥ 2, distributed along the leading edge of the shutter, each detection cell being suitable for detecting and communicating to a processing unit the presence and distance, Δx, from said detection cell measured along the longitudinal axis of a body positioned between said detection cell and the distal transverse edge, characterized in that said motorized door further comprises A processing unit programmed to receive signals from each of the n detection cells and to trigger the following operations, in case a number n1 of the n detection cells, with n1 ≥ 1, communicates to the CPU the detection of the presence of a body located at a distance, Δx, of less than or equal to a predefined safety distance, Δxs, from each of said detection cells, Δx < Δxs, during the moving in the first direction (α) of the shutter at a service closing speed, v1, from the open position (x1,1) towards the closed position (x1,0), (a) In case the proportion, P = n1/n, of detection cells identifying the presence of a body at a same time located at a distance, Δx ≤ Δxs, is less than or equal to a predefined safety proportion, Ps, (P ≤ Ps) the CPU is programmed to instantly stop the movement of the leading edge in the first direction (α), and optionally reverse said movement into the second direction (β); (b) In case the proportion, P, of detection cells identifying the presence of a body at a same time located at a distance, Δx ≤ Δxs, is greater than the safety proportion, Ps, (P > Ps), the CPU is programmed to communicate a signal to progressively reduce the closing speed of the leading edge in the first direction (α), down to a stop upon contacting said body at Δx = 0. A shutter of dimensions suitable for closing the area, and comprising a leading edge substantially parallel to the distal transverse edge of the area, A motorized driving mechanism suitable for moving the leading edge of the shutter along the longitudinal axis between an open position (x1,1), wherein the leading edge is adjacent to the proximal transverse edge and a closed position (x1,0), wherein the leading edge contacts the distal transverse edge, in a first direction (α) to close said area and in a second direction (β) to open said area; An array of n detection cells (s1, s2,..., sn), wherein n ≥ 2, distributed along the leading edge of the shutter, each detection cell being suitable for detecting and communicating to a processing unit the presence and distance, Δx, from said detection cell measured along the longitudinal axis of a body positioned between said detection cell and the distal transverse edge, characterized in that said motorized door further comprises A processing unit programmed to receive signals from each of the n detection cells and to trigger the following operations, in case a number n1 of the n detection cells, with n1 ≥ 1, communicates to the CPU the detection of the presence of a body located at a distance, Δx, of less than or equal to a predefined safety distance, Δxs, from each of said detection cells, Δx < Δxs, during the moving in the first direction (α) of the shutter at a service closing speed, v1, from the open position (x1,1) towards the closed position (x1,0), (a) In case the proportion, P = n1/n, of detection cells identifying the presence of a body at a same time located at a distance, Δx ≤ Δxs, is less than or equal to a predefined safety proportion, Ps, (P ≤ Ps) the CPU is programmed to instantly stop the movement of the leading edge in the first direction (α), and optionally reverse said movement into the second direction (β); (b) In case the proportion, P, of detection cells identifying the presence of a body at a same time located at a distance, Δx ≤ Δxs, is greater than the safety proportion, Ps, (P > Ps), the CPU is programmed to communicate a signal to progressively reduce the closing speed of the leading edge in the first direction (α), down to a stop upon contacting said body at Δx = 0. (a) In case the proportion, P = n1/n, of detection cells identifying the presence of a body at a same time located at a distance, Δx ≤ Δxs, is less than or equal to a predefined safety proportion, Ps, (P ≤ Ps) the CPU is programmed to instantly stop the movement of the leading edge in the first direction (α), and optionally reverse said movement into the second direction (β); (b) In case the proportion, P, of detection cells identifying the presence of a body at a same time located at a distance, Δx ≤ Δxs, is greater than the safety proportion, Ps, (P > Ps), the CPU is programmed to communicate a signal to progressively reduce the closing speed of the leading edge in the first direction (α), down to a stop upon contacting said body at Δx = 0.