第一章 可变信息标志系统组成图 ·················································································································2
第二章 可变信息标志工作条件······················································································································3
第三章 无线通讯方式 ······································································································································3
第四章 可变信息标志防护措施······················································································································4
4.1 可变信息标志防高/低温措施·········································································································4
4.2 可变信息标志防尘、防潮、防盐雾措施 ·······················································································4
4.3 可变信息标志防火措施···················································································································5
4.4 可变信息标志监控措施···················································································································5
4.5 可变信息标志的可靠性及可维护性 ·······························································································5