MANUAL BLOCK SYSTEM RULES
321. On portions of the railway so specified in the time table, or in special instructions, the use of the main track will be governed by the manual block system.
322. The movement of trains will, unless otherwise provided, be supervised by the train dispatcher who will issue instructions as may be required to operators or conductors.
323. Special instructions as may be necessary to govern this method of operation will be issues. Except as affected by such instructions and Rules 321 and 322, all Operating, ABS and Interlocking Rules remain in force.