(b) The draw of the Fuller Warren (I10-I95) Bridge, mile 25.4, at Jacksonville, shall open on signal except that, from 7 a.m. to 9 a.m. and from 4 p.m. to 6 p.m., Monday through Friday except Federal holidays, the draws need not be opened for the passage of vessels. From 9 a.m. to 4 p.m., Monday through Friday except Federal holidays, except for tugs with tows, the draws need open only on the hour for the passage of vessels. The draws shall open at any time for vessels in an emergency involving life or property.
(c) The draw of the Florida East Coast automated railroad bridge, mile 24.9 shall operate as follows:
(1) The bridge shall be constantly tended and have a mechanical override capability for the automated operation. A radio telephone shall be maintained at the bridge for the safety of navigation.
(2) The draw is normally in the fully open position, displaying flashing green lights to indicate that vessels may pass.
(3) When a train approaches, large signs on both the upstream and downstream sides of the bridge flash "Bridge Coming Down," the lights go to flashing red, and siren signals sound. After an eight minute delay, the draw lowers and locks if there are no vessels under the draw. The draw remains down for a period of eight minutes or while the approach track circuit is occupied.
(4) After the train has cleared, the draw opens and the lights return to flashing green.