In the province of Québec, they use stoplights that have shape coding. The
lights are mounted horizontally above the roadway. the left and right ends have
larger, circular, red lights. The amber light is diamond shaped and immediately
to the right of the left-most red light. The green light is s
EN 60204-1 also says: Indicating towers on machines should have the applicable
colours in the following order from
the top down; RED, YELLOW, BLUE, GREEN and WHITE.
This is a “should” and not a “shall”, so it is not compulsory to follow this
convention, but it does seem to imply that the single
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