Towing device for an agricultural or industrial vehicle, comprising: - an upper frame associable with an agricultural or industrial vehicle; - a lower frame hinged to said upper frame and movable between a closed configuration and at least one open configuration; - at least one extractable portion associated with said lower frame in a sliding manner and supporting at least one hooking element for hooking the vehicle to be towed; said extractable portion being movable between a retracted position and an extended position; - locking means of said extractable portion with respect to said lower frame comprising at least one locking element associated with said upper frame and adapted to be inserted inside a corresponding hole defined on said extractable portion when this is in the retracted position passing through said lower frame, with the latter in closed configuration, where said locking element is movable between a raised configuration, wherein it allows the sliding of said extractable portion with respect to the lower frame, and a lowered configuration, wherein it is insertable inside said hole with said extractable portion in retracted position and said lower frame in closed configuration; where said locking element has an upper extremity protruding from said upper frame, and visible from the outside, both in the raised and in the lowered configuration, and by the fact that said hole is of the through type, said locking element being inserted in a sliding manner inside a relative seat formed in said upper frame and said upper extremity protruding from said seat both in the lowered configuration and in the raised configuration; characterized by the fact that: said locking means comprising at least two of said locking elements, each of which is adapted to be inserted in a corresponding hole defined on said extractable portion; and by the fact that the device comprises: detection means for detecting the position of said locking element, comprising at least two sensors, one for each of said locking elements, adapted to detect when said locking elements are in the lowered configuration, and comprising signaling means for signaling the position of said locking elements which are operatively connected to said sensors; where said signaling means are adapted to signal when both said locking elements are in the lowered configuration; said signaling means being adapted to emit a first luminous signal for each of said locking elements, so as to signal when each of them is in the lowered configuration, and a second luminous signal, different to said first luminous signal, when both said locking elements are in the lowered configuration. - an upper frame associable with an agricultural or industrial vehicle; - a lower frame hinged to said upper frame and movable between a closed configuration and at least one open configuration; - at least one extractable portion associated with said lower frame in a sliding manner and supporting at least one hooking element for hooking the vehicle to be towed; said extractable portion being movable between a retracted position and an extended position; - locking means of said extractable portion with respect to said lower frame comprising at least one locking element associated with said upper frame and adapted to be inserted inside a corresponding hole defined on said extractable portion when this is in the retracted position passing through said lower frame, with the latter in closed configuration, where said locking element is movable between a raised configuration, wherein it allows the sliding of said extractable portion with respect to the lower frame, and a lowered configuration, wherein it is insertable inside said hole with said extractable portion in retracted position and said lower frame in closed configuration; said locking means comprising at least two of said locking elements, each of which is adapted to be inserted in a corresponding hole defined on said extractable portion; and by the fact that the device comprises: detection means for detecting the position of said locking element, comprising at least two sensors, one for each of said locking elements, adapted to detect when said locking elements are in the lowered configuration, and comprising signaling means for signaling the position of said locking elements which are operatively connected to said sensors; where said signaling means are adapted to signal when both said locking elements are in the lowered configuration; said signaling means being adapted to emit a first luminous signal for each of said locking elements, so as to signal when each of them is in the lowered configuration, and a second luminous signal, different to said first luminous signal, when both said locking elements are in the lowered configuration.