This system conforms to the recommendations of the International Commission on Illumination, &quot; Colours of Signal Lights &quot; , IEC publication No. 2.2 (TC-1.6) 1975.
Ce système est conforme aux recommandations de la Commission internationale de l &apos; éclairage, publication CIE no 2.2 (TC - 1.6) 1975, &lt; &lt; Couleur des signaux lumineux &gt; &gt; .