#34 I recently visited a European country where all the lights had something like this. Not a circle but one of the lights simply had a countdown, both until green and how long it would stay green once active.

#2 - Saw this basic concept (extended parallel lines rather than square) in the US Army in the early 1970s...
#6 - Excellent idea!
#10 - Sorry, that ain't nowhere near 'fresh pizza'!
#15 - Saw this one before, too... in Baltimore (I think) circa 1972/73.