OPERATIVE PEDAL DEVICE FOR VEHICLE

Provided is a vehicular operation pedal device having a fail-safe function to prevent backward movement of a step portion of an operation pedal mechanism at the time of a vehicle collision. A brake pedal device () includes a protrusion () which performs rotation restriction for preventing a rotating member () from rotating about a rotating shaft portion (), and on which a restricting load (F) acts by the rotation restriction. During the rotation restriction by the protrusion (), a second load acts as the restricting load (F) when a step portion () of an operation pedal mechanism () is fully stepped forward of a vehicle, and when the restricting load (F) is greater than the second load, the rotation restriction is released due to deformation of the protrusion () by shearing or bending.