Contrast Options Shall be Provided - 1194.21(j)
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I spent, after we had gotten this done, this came from some earlier regulations. Sometimes what happens in this business is that you end up inheriting badly written regulations from other rules, in this case from the telephone rule. I am positive that this can be stated in terms of lumens and reflectivity because contrast is a ratio of two brightnesses, the brightness of the background and the brightness of the foreground. I am absolutely positive that it could be stated, if someone really wanted to measure the ratio of the background to the foreground, that it could be stated more scientifically. As to whether it will, well, I don't know.