F40CFan wrote:The yellow for /A\ and blue for |B| were used on lines that terminated in the loop, whereas the red/green A/B signs were used on lines that ran through the loop. That is why the original Lake line had yellow and blue signs until it became the Lake-Dan Ryan line and got red and green signs.Thanks for jogging my memory about Lake St. having the same yellow and blue /A\ and |B| signs before it was aligned with the Dan Ryan. It makes more sense now...
--Dorian--