DIN EN 50556:2011-09

This European Standard specifies requirements for Road Traffic Signal Systems, including their development, design, testing, installation and maintenance. To satisfy the legal and regulatory requirements and specific provisions of each CENELEC country, certain characteristics in this standard contain a range which is defined by a number of discrete classes. The class to be used in the respective country will be selected by the Standards Authority of the CENELEC member of that country from the range specified. Thus this European Standard contains the essential electrotechnical requirements of all CENELEC countries and permits through the class selection procedure, countries to incorporate their own requirements. It is believed that this first step will allow, over a period of time, a gradual alignment of Road Traffic Signal Systems in Europe. The responsible Committee is Subcommittee UK 713.3 "Straßenverkehrs-Signalanlagen" ("Road traffic signal systems") of the DKE (German Commission for Electrical, Electronic and Information Technologies) at DIN and VDE.