求翻译：高速公路通信系统设计属于基础类设施，主要为收费、监控系统提供信息(话音、数据、图像)传输通道，由光缆数字传输系统、程控数字交换系统、移动通信系统、紧急电话系统等组成。根据其通信系统在高速公路行业的应用特点，高速公路通信网主要由长途通信干线传输网、程控数字交换机、数据传输网、图像传输网、移动通信网和卫星通信网等部分组成。是什么意思？

Highway communication system design is the base class facilities, primarily for fees, the monitoring system to provide information (voice, data, images) transmission channel, the composition of the fiber optic digital transmission system, program-controlled digital switching systems, mobile communic

Freeway communications systems design is a base class for the primary charges, and the monitoring and control system provides information (voice, data, image) by optical fiber transmission channel, digital transmission system, programd digital switching system, mobile communication systems, emergenc

Design of Expressway communication system belonging to the Foundation class facilities, primarily for charging, monitoring system to provide information (voice, data, image) transmission channel, digital transmission systems, fiber optic cable program controlled digital switching systems, mobile com