the name blue night network was adopted, and with it the 300-series route numbers described above, and a new color-coding for bus and streetcar stops. the existing standard ttc-stop sign had a red square or stripe at the top and bottom; now, for all stops with 24-hour service, this was changed to red and blue, with the legend "24 hr" added. those stops used only for the blue night network, mostly for night routes paralleling the subway, received the standard sign with red changed to blue (and a notice of the limited hours). the blue night network debuted in february 1987.