When the electrical condition of a driver who is an operator of a vehicle is acquired by providing an electrode part on a steering wheel or the like that comes into contact with the driver, the electrode part is formed on a steering-wheel structure and is covered with a protective member. Conductive parts that pass through the protective part are formed by way of holes that are formed in the protective member. The conductive parts make the hand of the driver touching the steering wheel be in electrical contact with the electrode part. This configuration enables detection of the electrical condition of the operator without losing the degree of freedom in design by increasing the durability and easing the restrictions on the material and shape.
