> The FHWA has indeed adopted a speed limit sign > *similar* to the > international standard. The idea was to distinguish > the metric speed limit > sign from the non-metric one. The disappointing > aspect is that the circle > is black rather than red. > > > > http://mutcd.fhwa.dot.gov/HTM/2003/part2/fig2b-01_longdesc.htm >
Originally, the circle was going to be red, but they changed it, because someone made the suggestion that the colour red was representative of something that was prohibited rather than allowed. When I saw that the colour was going to be red, I was very happy since it not only showed a migration to metric, but also it was more like the international speed limit sign. The change was disappointing. Stephen
