A switch panel device permitting the mounting of a larger number of switches together on a steering handle pipe is disclosed that improves operability and operator comfort and safety. Plural switches are arranged on columns and/or on stages. An indicating and warning switch group having higher urgency and frequency of use than remaining switch elements are allocated to a column which is located nearest a handle bar grip. Further, the indicating and warning switch group is also allocated to a first horizontal stage which is set on a horizontal line coincident with a handle pipe and into additional stages positioned adjacent to the first horizontal stage in vertical distribution.