849. Before Issuing TOP Authority
Before issuing TOP authority, the RTC must;
(a) ensure there is no conflicting movement within, or authorized to enter, the TOP limits to be granted unless such movement has been restricted in accordance with Rule 311, 567.1, 567.2, 618 or 618.1; and
(b) in CTC and controlled interlockings, block at Stop all devices controlling signals governing the entry of movements into the limits to be granted. Signal blocking applied to protect a TOP must be maintained until the TOP is cancelled to the foreman.
850. Same or Overlapping TOP Limits
The RTC must not authorize a movement to enter overlapping TOP limits.
851. TOP Authority Within Cautionary Limits
(a) A TOP must not be issued to apply within cautionary limits where there are movements operated that cannot be controlled by the RTC .
(b) The RTC must not authorize a movement to the cautionary limit sign while a TOP is in effect within such limits.
852. TOP Encompassing Controlled Locations
When authorized by a TOP to occupy a track within a controlled location, the authority includes any track within the controlled location that connects to that track but only to a point on the connecting track where occupancy would require separate TOP authority.
853. Remains in Effect
A TOP once in effect continues so until superseded or cancelled.
854. One Track Unit - Foreman Requirements
Before acting under the authority of a TOP , a foreman in charge of a single track unit must;
(a) read the TOP aloud to the employees accompanying the track unit; and
(b) require those employees who hold a valid certificate of rules qualification to read and initial the TOP .
855. Multiple Track Units and/or Track Work - Foreman Requirements
Before acting under the authority of a TOP , a foreman in charge of the protection of track work or in charge of more than one track unit must;
(a) read the TOP aloud to at least one other employee involved in the work who holds a valid certificate of rules; and
(b) when conditions permit, require those to whom the TOP is read aloud, to read and initial the TOP .
Special instructions will indicate additional procedures for protection of sub-foreman.
856. Communication between Employees and Foremen
An employee who has been made aware of the contents of the TOP must remind the foreman of the contents in sufficient time to ensure compliance.
857. Multiple TOP
Where required, special instructions will indicate additional procedures.