Composite cable special for expressway

The utility model discloses a special composite cable for expressways, which comprises a plurality of power wire cores, a plurality of control wire cores and a plurality of signal transmission cables,the power wire cores, the control wire cores and the signal transmission cables are stranded into a bundle to form a comprehensive cable core, and a wrapping layer, a metal shielding layer, a waterproof layer, an armor layer and an outer protective layer are sequentially coated outside the comprehensive cable core. The power wire core is mainly used for tunnel illumination and equipment power supply. The control cable core is used for controlling a switch cabinet, the signal transmission cable is mainly used for signal transmission, video monitoring, audio communication and the like, the power cable, the control cable and the signal transmission cable are compounded together to be designed into one cable, the area of a laid line is reduced, the laying time and cost are saved, and the working efficiency is improve