A method of detecting a lane change of a subject vehicle, having a locating device which uses angular resolution for locating vehicles traveling in front, and a device for determining the yaw rate of the subject vehicle. In other embodiments, flexible material is provided between the bit body and the cutters. When a load is applied to the video display, the load is transferred to the rigid body, which absorbs and distributes the load to the peripheral frame. The first fixing element has a locking hole for engagingly receiving the fastener. Two kinds of the oils including amino group as a functional group are mixed to use as a lubricant, thereby enabling the surface of a heating roller to exhibit the most excellent releasing property with respect to a toner as well as realize low running cost.