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Art. 56 Ordinance of 5 September 1979 on Road Signage (OSR) - Numbering of Roads, Junctions, and Branches
Art. 56 OSR · Numbering of Roads, Junctions, and Branches
The "Numbered Plaques for European Roads" (4.56) bear the letter "E" in white color and a number of the same color on a green background; they indicate sections of the major European transit road network. The numbers are based on the ordinance of 18 December 1991 regarding major transit roads; their appearance and placement must comply with the instructions of the DETEC.
The "Numbered Plaques for Motorways and Semi-Motorways" (4.58) have a white number on a red background; they designate the network of motorways and semi-motorways. The DETEC establishes the basic network and issues instructions regarding the appearance and placement of numbered plaques.
The "Numbered Plaques for Main Roads" (4.57) have a white number on a blue background; they designate the most important main roads. The numbers are based on the ordinance of 18 December 1991 regarding major transit roads; their appearance and placement must comply with the instructions of the DETEC.
The "Numbered Plaque for Junctions" (4.59) and the "Numbered Plaque for Branches" (4.59.1) feature a black symbol and a black number on a white background; they indicate junctions or branches on motorways and semi-motorways. The DETEC determines the numbers in agreement with the cantons and issues instructions regarding the appearance and placement of numbered plaques.