17. Signals, gates, operating mechanisms and control circuits shall be in accordance with A.A.R. recommended practice.

18. The instrument cases shall be locked when not being used.

• 19. (1) All highway crossing protective devices shall be maintained by the company to operate as intended and shall be tested as follows: for all crossings protected by flashing light signals and bells, or by flashing light signals, bells and gates, the tests shall be made at least once in each calendar week.

• (2) The method of tests shall be such as will indicate whether or not the highway crossing protective devices are in good working order. If the highway crossing protective devices operate improperly or fail to operate, notice shall be given as soon as possible by the railway employee discovering such improper operation or failure so that advice promptly reaches the department having charge of the operation and repair of such highway crossing protective devices. As soon as possible after the receipt of such notice, a flagman shall be placed at such crossing in order that all users of the said crossing may be protected until the highway crossing protective device concerned has been repaired. If the protection is for more than four tracks, two flagmen shall be used.

• 20. (1) When the Commission, by order, has apportioned the cost of maintenance of any highway-railway crossing signals, the company shall not, except in case of emergency brought about by accident or other conditions where immediate action is necessary, and except as provided in subsection (2), begin any major repair, the cost of which exceeds $1,000 without leave of the Commission and notice sent to other parties required to share in the maintenance cost of the crossing signal.

• (2) When all parties required to share in the cost of maintenance of the crossing signals agree with the company to share in the payment of the cost of the major repairs referred to in subsection (1), no leave of the Commission is required before beginning such major repairs.

21. The Railway Transport Committee may, by order, in respect of any single railway company, amend any requirement of this Part.

• 22. (1) All highway crossing protective devices, other than flashing light type (with or without gates), shall be maintained by the company to operate as intended and shall be tested as follows: for all crossings protected by bell and danger signs, or by mechanical gates, or by wigwag signals, the tests shall be made at least once a day, except during weekends and legal holidays when not more than two days may elapse on which no test is made.

• (2) The method of tests shall be such as will indicate whether or not the highway crossing protective devices are in good working order. If the highway crossing protective devices operate improperly or fail to operate, notice shall be given as soon as possible by the railway employee discovering such improper operation or failure so that advice promptly reaches the department having charge of the operation and repair of such highway crossing protective devices. As soon as possible after the receipt of such notice, a flagman shall be placed at such crossing in order that all users of the said crossing may be protected until the highway crossing protective device concerned has been repaired. If the protection is for more than four tracks, two flagmen shall be used.