Amended by
G.O. 572

The Board of
Railway Commissioners for Canada.

Order no. G.O. 547

Monday, the 2nd of
December, A.D. 1935

In the matter of proposed regulations regarding plans required to be filed with the Board in connection with applications for railway crossings, junctions, and drawbridges under Sections 252 and 305 of the Railway Act, and general requirements for interlocking appliances.

521

Hugh Guthrie
Chief Commissioner

S. J. McLean
Asst. Chief Commissioner

F. N. Garceau
Deputy Chief Commissioner

T. C. Norris
Commissioner

J. A. Stoneman
Commissioner

G. A. Stone
Commissioner

Upon the report and recommendation of the Chief Engineer and the Chief Operating Officer of the Board,—

It is ordered:—

  1. That the following regulations regarding plans to be filed with the Board in connection with applications for railway crossings, junctions, and drawbridges under sections 252 and 305 of the Railway Act, and general requirements for interlocking appliances, be, and they are hereby, prescribed for the observance of every railway company within the legislative authority of the Parliament of Canada, namely:—

Regulations regarding plans required to be filed with the Board in connection with application for railway crossings, junctions, and drawbridges, Sections 252 and 305 of the Railway Act; and general requirements for interlocking appliances.

Send to the Secretary of the Board an application accompanied by three sets of the plan and profile of both railways on each side of the proposed crossing or junction, or of the railway in the case of a drawbridge, for a distance of one mile in each direction.

Scale.— Plan 400 feet to an inch.
Profile 400 feet an inch horizontal , 20 feet to an inch vertical.

First set for approval by and filing with the Board. Second and third sets to be certified and returned to the parties concerned, with a certified copy of the order.

The applicant must serve copies of the application and the plan and profile on the company whose line is to be crossed or joined, and file with the Board evidence of such service.

When it is proposed to cross a canal or navigable water, approval of the Governor in Council must be secured, as provided in Section 248 of the Railway Act, before making application to the Board.

Upon completion of the work application must be made for leave to operate trains.

Interlocking system

General requirements applicable to railways for interlocking appliances of rail level crossings, junctions, and drawbridges

  1. An application, accompanied by a plan in triplicate showing the complete layout, shall be submitted to the Board for approval. When possible, railway companies concerned shall agree on the plan before submitting it to the Board. In the preparation of this plan, the symbols used to indicate all the functions of the interlocking shall be those approved by the Signal Section ff the Association of American Railroads. The plan shall show the location of the crossing, junction, or drawbridge, and the position of all tracks and junctions within the limits of the interlocking plant.
  2. Rail level crossings and junctions shall be protected by home and approach signals placed each way from the crossing or junction.
  3. Drawbridges shall be protected by derails, home and approach signals placed each way from the drawbridge.
  4. Rail level crossings of steam railways by electric railways shall be protected by derails on the electric railway, and home signals on the steam railway, placed each way from the crossing. Where the latter is a high-speed railway, approach signals may also be required. In certain cases derails may be required on the steam railway Lnd/or home signals on the electric railway, depending on the relative importance of the traffic.
  5. For both mechanically and power-operated plants, the apparatus shall be so constructed and circuits so arranged that the failure of any part of the system, affecting the safety of train operation, shall cause all signals affected to give the most restrictive indications that conditions require.
  6. Signals of approved form shall be used, the indications being given by position, by lights of prescribed colour, or by both, and shall be placed either over or upon the right of, and next to, the track upon which train movements are governed, except on railways operated with current of traffic to the left, or where physical conditions require the location of the signals to the left of the track.
  7. Approach signals, unless inoperative, shall be power-operated. Home and dwarf signals shall be pipe-connected, unless operated by power. Dwarf signals may be used to govern train movements on all tracks other than main tracks. On main tracks they may be used to govern train movements against the current of traffic. Home signals shall be located not less than 500 feet from the nearest frog of crossing, junction, or the end of a drawbridge.
  8. All power-operated interlocking signals shall be equipped with indication locks, or the equivalent, designed so as to prevent the changing of the route unless the signal has displayed its most restrictive indication.
  9. Locking of levers or arrangement of circuits shall be such that no signal can be cleared for any given route, unless the route is properly set.
  10. Unless electric approach locking is provided, time locks shall be installed to prevent the changing of routes until after the home signal has displayed the "stop" indication a predetermined time.
  11. Lever machines at mechanical interlocking plants shall be equipped with locking of the preliminary type.

And it is further ordered:—

  1. That the regulations herein adopted shall become effective as and from the date of this order.

Hugh Guthrie
Chief Commissioner,
The Board of Railway Commissioners for Canada.