This prestandard specifies the technical requirements for Signal Heads with LED for use in Road Traffic Signal Systems.

This Document is related to the following Topics (in bold):

93 CIVIL ENGINEERING
93.020 Earthworks. Excavations. Foundation construction. Underground works
93.080 Road engineering
93.100 Construction of railways
93.120 Construction of airports
93.140 Construction of waterways, ports and dykes

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