(a) The draw of the Monroe Street bridge, mile 0.4 at Port Clinton, shall open as follows:

(1) From April 1 through November 30—

(i) Between the hours of 6 p.m. and 6 a.m., the draw shall open on signal.

(ii) Between the hours of 6 a.m. and 6 p.m., the draw shall open on signal. However, the draw need not open on signal during this time for recreational craft and commercial vessels licensed to carry six or less passengers. For these vessels, the draw need open only from five minutes before to five minutes after the hour and half-hour.

(2) From December 1 through March 31, the draw shall open on signal if at least 12 hours' notice is given.

(b) The draw of the Norfolk Southern Bridge, Mile 1.5 at Port Clinton, is remotely operated, is required to operate a radio telephone, and operate and answer a telephone, and shall open on signal. Except, from December 1 through March 31, the draw shall open on signal if at least 12-hours' notice is given.