A riding mower (100) is described, comprising at least one driving seat (101), a safety device (102) which includes a transducer (2) adapted to detect the presence of the operator on the seat (101) and to provide a first electrical signal (V0) as a response, and a control unit (3) adapted to electronically manage the movement of the riding mower (100). The riding mower (100) comprises a control tamper apparatus (1) configured to convert said first electrical signal (V0) into a second electrical signal (V) and, if said second electrical signal (V) is equal to a reference value (Vref), to provide said control unit 3 with a control signal (STOP) as a response. (Fig.3).
