Standard Number: JT/T 1431.4-2022(JT/T1431.4-2022)
Chinese:公路机电设施用电设备能效等级及评定方法 第4部分：公路LED可变信息标志
English:Energy Efficiency Classes and Assessment Methods for Electric Equipment Used in Highway Electrical and Mechanical Facilities Part 4: Highway LED Variable Message Signs
Effective Date:2022-09-09
Standard Applicability:This part applies to the energy efficiency rating of highway LED variable message signs. It also applies to LED variable speed limit signs for highways and LED variable message signs for cities, ports, railroads and terminals.
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