A passenger behavior-oriented smart urban public transport system and its implementation, which includes a field system mounted on a vehicle and a control center controlling the field system. An output stage includes a plurality of transistors groups, each of the transistor groups has a plurality of binary weighted transistor pairs. The stiffening stylet is configured such the stylet does not extend to the distal end of the flexible body and remains stationary within the lumen to prevent buckling of the electrode array during insertion of the electrode array through a cochleostomy and into the cochlea. The light emitting member is disposed in an inclined manner, and is directed toward the operation head of the drive head of the tool body. Each image is an image of the corresponding head shape from one viewing orientation of a plurality of predetermined viewing orientations. The turn-on resistance of the device is relatively low as the insulator occupies only part of the source-drain spacing.