Rule 843 — Slow Track Protection – Rule 43

1. (i)yellow flag to the right of the track as seen from an approaching movement at least two miles in each direction from the outermost limits indicated in the GBO , and (ii) green flag to the right of the track as seen from an approaching movement in each direction, immediately beyond the defect. Exception: When there are abutting limits contained within a single GBO , a single green flag will be displayed to either side of the track to identify each restriction within the limits.
2. (a)When slow track protection is required the request must be in writing and when practicable on the prescribed form, and after GBO protection has been provided, the speed restriction(s) and limits must be confirmed to the foreman in writing who will arrange to place a:
3. (b)The GBO must indicate the location of flags that cannot be placed at the distance prescribed.
4. (c)When the placement of flags as prescribed is delayed, the RTC must be advised and the following must be added to the Form V: “Signals may not be in place.” The flags must be placed as soon as possible and the GBO changed accordingly.
5. (d)When a restriction is located at a single mile point, one green signal will be displayed to identify the restriction and may be displayed to either side of the track.
6. (e)When a rail break has been detected by an engineering employee and it is safe to operate over the break at a speed less than posted speed, the RTC will provide GBO protection to affected movements stating the authorized speed over the break and how such location is marked in the field, by either a Rail Break Sign or foreman, at the break. Flags required will not be in place.
7. (f)The regular placement of flags must be utilized after 24 hours if the defect is continuing.

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